{"id":1146,"date":"2024-04-11T13:57:44","date_gmt":"2024-04-11T10:57:44","guid":{"rendered":"https:\/\/sisu.ut.ee\/lcms_method_validation\/self-test-3-2\/"},"modified":"2024-04-11T13:57:44","modified_gmt":"2024-04-11T10:57:44","slug":"self-test-3-2","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/lcms_method_validation\/self-test-3-2\/","title":{"rendered":"Self test 3.2"},"content":{"rendered":"<div id=\"watupro_quiz\" class=\"quiz-area single-page-quiz\">\n<p id=\"submittingExam23\" style=\"display:none;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\"><\/p>\n\n\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-23\" enctype=\"multipart\/form-data\">\n<div class=\"watu-question \" id=\"question-1\" style=\";\"><div id=\"questionWrap-1\" class=\"   watupro-question-id-93\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">1. <\/span>The following calibration graph data were obtained for determination of p-fluorophenol by LC\/ESI\/MS. Is there enough data for linearity evaluation using statistical models?<br>\r\n<table style=\"width: 264px; border-collapse: collapse;\" border=\"1\"><tbody><tr><td class=\"xl67\" style=\"text-align: center; border: 1px solid black;\"><strong>C (ppb)<\/strong><\/td><td class=\"xl68\" style=\"text-align: center; border: 1px solid black;\"><strong>Signal 1<\/strong><\/td><td class=\"xl68\" style=\"text-align: center; border: 1px solid black;\"><strong>Signal 2<\/strong><\/td><\/tr><tr><td class=\"xl63\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">1<\/td><td class=\"xl64\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">2974923.9<\/td><td class=\"xl64\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">3168712.7<\/td><\/tr><tr><td class=\"xl63\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">2<\/td><td class=\"xl64\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">7488019.6<\/td><td class=\"xl64\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">6342084.1<\/td><\/tr><tr><td class=\"xl63\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">3<\/td><td class=\"xl64\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">9731589.4<\/td><td class=\"xl64\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">8301246.1<\/td><\/tr><tr><td class=\"xl63\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">4<\/td><td class=\"xl64\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">11342694<\/td><td class=\"xl64\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">13785834<\/td><\/tr><tr><td class=\"xl63\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">5<\/td><td class=\"xl64\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">14842962<\/td><td class=\"xl64\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">14119114<\/td><\/tr><tr><td class=\"xl63\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">7<\/td><td class=\"xl64\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">17510482<\/td><td class=\"xl64\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">19293589<\/td><\/tr><tr><td class=\"xl65\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">10<\/td><td class=\"xl66\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">30472176<\/td><td class=\"xl66\" style=\"text-align: center; border: 1px solid black;\" align=\"right\">31279197<\/td><\/tr><\/tbody><\/table>\u00a0<br>\r\n<br>\r\n<strong>For use with ValChrom: <\/strong><a href=\"https:\/\/sisu.ut.ee\/lcms_method_validation\/st_3-2_4_linearity_0-xls\/\" data-fid=\"57411\">st_3.2_4_linearity_0.xls<\/a>\u00a0<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_1\" value=\"93\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType93\" class=\"answerTypeCnt1\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices93\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-93[]\" id=\"answer-id-231\" class=\"answer   answerof-93 \" value=\"231\"><label for=\"answer-id-231\" id=\"answer-label-231\" class=\" answer\"><span><p>The data set is suitable<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-93[]\" id=\"answer-id-232\" class=\"answer   answerof-93 \" value=\"232\"><label for=\"answer-id-232\" id=\"answer-label-232\" class=\" answer\"><span><p>The data set is not suitable<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-1\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-93\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn93\" class=\"liveResultBtn1 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(93, 1);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-2\" style=\";\"><div id=\"questionWrap-2\" class=\"   watupro-question-id-94\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">2. <\/span>The following calibration graph data were obtained for determination of p-fluorophenol by LC\/ESI\/MS. Is there enough data for linearity evaluation using statistical models?<br>\r\n<table style=\"width: 176px; border-collapse: collapse;\" border=\"1\"><tbody><tr><td style=\"text-align: center; border: 1px solid black;\"><strong>C (ppb)<\/strong><\/td><td style=\"text-align: center; border: 1px solid black;\"><strong>Signal<\/strong><\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">5<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">14842962<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">10<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">30472176<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">30<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">61351801<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">50<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">75849041<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">100<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">129197238<\/td><\/tr><\/tbody><\/table>\u00a0<br>\r\n<br>\r\n<strong>For use with ValChrom: <\/strong><a href=\"https:\/\/sisu.ut.ee\/lcms_method_validation\/st_3-2_5_linearity-xls\/\" data-fid=\"57412\">st_3.2_5_linearity.xls<\/a>\u00a0<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_2\" value=\"94\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType94\" class=\"answerTypeCnt2\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices94\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-94[]\" id=\"answer-id-233\" class=\"answer   answerof-94 \" value=\"233\"><label for=\"answer-id-233\" id=\"answer-label-233\" class=\" answer\"><span><p>The data set is suitable<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-94[]\" id=\"answer-id-234\" class=\"answer   answerof-94 \" value=\"234\"><label for=\"answer-id-234\" id=\"answer-label-234\" class=\" answer\"><span><p>The data set is not suitable<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-2\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-94\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn94\" class=\"liveResultBtn2 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(94, 2);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-3\" style=\";\"><div id=\"questionWrap-3\" class=\"   watupro-question-id-95\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">3. <\/span>The following calibration graph data were obtained for determination of p-fluorophenol \u00a0by LC\/ESI\/MS. Construct a residual plot and evaluate the linearity of the calibration graph using the residual plot.<br>\r\n<table style=\"width: 272px; height: 240px; border-collapse: collapse;\" border=\"1\"><tbody><tr><td style=\"text-align: center; border: 1px solid black;\"><strong>C (ppb)<\/strong><\/td><td style=\"text-align: center; border: 1px solid black;\"><strong>Signal (average of 3 measurements)<\/strong><\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">1<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">3256559<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">2<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">6863182<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">3<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">9233172<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">4<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">12586524<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">5<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">15588880<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">7<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">19099004<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">10<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">29213011<\/td><\/tr><\/tbody><\/table><strong>For use with ValChrom: <\/strong><a href=\"https:\/\/sisu.ut.ee\/lcms_method_validation\/st_3-2_1_linearity-xls\/\" data-fid=\"57413\">st_3.2_1_linearity.xls<\/a><div class=\"h5p-iframe-wrapper\"><div class=\"video-placeholder-wrapper video-placeholder-wrapper--fixed\" style=\"height: 366px;\">\n\t\t\t    <div class=\"video-placeholder d-flex justify-content-center align-items-center\">\n\t\t\t        <div class=\"overlay text-white p-2 w-100 text-center d-block justify-content-center align-items-center\">\n\t\t\t            <div>To view third-party content, please accept cookies.<\/div>\n\t\t\t            <button class=\"btn btn-secondary btn-sm mt-1 consent-change\">Change consent<\/button>\n\t\t\t        <\/div>\n\t\t\t    <\/div>\n\t\t\t<\/div>\n<\/div><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_3\" value=\"95\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType95\" class=\"answerTypeCnt3\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices95\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-95[]\" id=\"answer-id-235\" class=\"answer   answerof-95 \" value=\"235\"><label for=\"answer-id-235\" id=\"answer-label-235\" class=\" answer\"><span><p>Residuals are distributed randomly and calibration graph is linear<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-95[]\" id=\"answer-id-236\" class=\"answer   answerof-95 \" value=\"236\"><label for=\"answer-id-236\" id=\"answer-label-236\" class=\" answer\"><span><p>Residuals are not distributed randomly and calibration graph is linear<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-95[]\" id=\"answer-id-237\" class=\"answer   answerof-95 \" value=\"237\"><label for=\"answer-id-237\" id=\"answer-label-237\" class=\" answer\"><span><p>Residuals are distributed randomly and calibration graph is not linear<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-95[]\" id=\"answer-id-238\" class=\"answer   answerof-95 \" value=\"238\"><label for=\"answer-id-238\" id=\"answer-label-238\" class=\" answer\"><span><p>Residuals are not distributed randomly and calibration graph is not linear<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-3\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-95\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn95\" class=\"liveResultBtn3 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(95, 3);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-4\" style=\";\"><div id=\"questionWrap-4\" class=\"   watupro-question-id-96\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">4. <\/span>The following calibration graph data were obtained for determination of p-fluorophenol \u00a0by LC\/ESI\/MS. Construct a residual plot and evaluate the linearity of the calibration graph using the residual plot.<br>\r\n<table style=\"width: 263px; height: 232px; border-collapse: collapse;\" border=\"1\"><tbody><tr><td style=\"text-align: center; border: 1px solid black;\"><strong>C (ppb)<\/strong><\/td><td style=\"text-align: center; border: 1px solid black;\"><strong>Signal (average of 3 measurements)<\/strong><\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">5<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">15588880<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">7<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">19099004<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">10<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">29213011<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">20<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">46644306<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">30<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">56559198<\/td><\/tr><tr><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">40<\/td><td style=\"text-align: center; border: 1px solid black;\" align=\"right\">66389856<\/td><\/tr><\/tbody><\/table><strong>For use with ValChrom:\u00a0<\/strong><a href=\"https:\/\/sisu.ut.ee\/lcms_method_validation\/st_3-2_2_linearity-xls\/\" data-fid=\"57414\">st_3.2_2_linearity.xls<\/a><div class=\"h5p-iframe-wrapper\"><div class=\"video-placeholder-wrapper video-placeholder-wrapper--fixed\" style=\"height: 366px;\">\n\t\t\t    <div class=\"video-placeholder d-flex justify-content-center align-items-center\">\n\t\t\t        <div class=\"overlay text-white p-2 w-100 text-center d-block justify-content-center align-items-center\">\n\t\t\t            <div>To view third-party content, please accept cookies.<\/div>\n\t\t\t            <button class=\"btn btn-secondary btn-sm mt-1 consent-change\">Change consent<\/button>\n\t\t\t        <\/div>\n\t\t\t    <\/div>\n\t\t\t<\/div>\n<\/div><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_4\" value=\"96\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType96\" class=\"answerTypeCnt4\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices96\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-96[]\" id=\"answer-id-239\" class=\"answer   answerof-96 \" value=\"239\"><label for=\"answer-id-239\" id=\"answer-label-239\" class=\" answer\"><span><p>Residuals are distributed randomly and calibration graph is linear<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-96[]\" id=\"answer-id-240\" class=\"answer   answerof-96 \" value=\"240\"><label for=\"answer-id-240\" id=\"answer-label-240\" class=\" answer\"><span><p>Residuals are not distributed randomly and calibration graph is linear<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-96[]\" id=\"answer-id-241\" class=\"answer   answerof-96 \" value=\"241\"><label for=\"answer-id-241\" id=\"answer-label-241\" class=\" answer\"><span><p>Residuals are distributed randomly and calibration graph is not linear<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-96[]\" id=\"answer-id-242\" class=\"answer   answerof-96 \" value=\"242\"><label for=\"answer-id-242\" id=\"answer-label-242\" class=\" answer\"><span><p>Residuals are not distributed randomly and calibration graph is not linear<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-4\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-96\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn96\" class=\"liveResultBtn4 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(96, 4);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-5\" style=\";\"><div id=\"questionWrap-5\" class=\"   watupro-question-id-97\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">5. <\/span>Which of the following approaches are suitable for estimating linearity:<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_5\" value=\"97\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType97\" class=\"answerTypeCnt5\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices97\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-97[]\" id=\"answer-id-243\" class=\"answer   answerof-97 \" value=\"243\"><label for=\"answer-id-243\" id=\"answer-label-243\" class=\" answer\"><span><p>Visual evaluation of the calibration graph<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-97[]\" id=\"answer-id-244\" class=\"answer   answerof-97 \" value=\"244\"><label for=\"answer-id-244\" id=\"answer-label-244\" class=\" answer\"><span><p>Calculation of the residuals and visual evaluation of the residual plot<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-97[]\" id=\"answer-id-245\" class=\"answer   answerof-97 \" value=\"245\"><label for=\"answer-id-245\" id=\"answer-label-245\" class=\" answer\"><span><p>Correlation coefficient (r) higher than 0.98<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-97[]\" id=\"answer-id-246\" class=\"answer   answerof-97 \" value=\"246\"><label for=\"answer-id-246\" id=\"answer-label-246\" class=\" answer\"><span><p>Statistical tests, e.g lack-of-fit test<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-5\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-97\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn97\" class=\"liveResultBtn5 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(97, 5);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-6\" style=\";\"><div id=\"questionWrap-6\" class=\"   watupro-question-id-98\">\n\t\t\t<div class=\"question-content\"><p><span class=\"watupro_num\">6. <\/span>The following calibration graph data were obtained for determination of p-fluorophenol \u00a0by LC\/ESI\/MS.<\/p>\n<p>Estimate the linearity of the data using the lack-of-fit test (at confidence interval 95%). First, find the number of degrees of freedom,\u00a0 <em>F<\/em><sub>calc<\/sub>\u00a0and\u00a0<em>F<\/em><sub>tab<\/sub> (with two decimal places) using the lack-of-fit test. Finally, make the decision whether the data is linear or not based on the results of the lack-of-fit test (taking into account the intercept).<\/p>\n<table style=\"border: 1px solid black;\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"xl65\" style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>C (ppb)<\/strong><\/td>\n<td class=\"xl65\" style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 1<\/strong><\/td>\n<td class=\"xl65\" style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 2<\/strong><\/td>\n<td class=\"xl65\" style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 3<\/strong><\/td>\n<td class=\"xl65\" style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 4<\/strong><\/td>\n<td class=\"xl65\" style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 5<\/strong><\/td>\n<td class=\"xl65\" style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 6<\/strong><\/td>\n<td class=\"xl65\" style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 7<\/strong><\/td>\n<td class=\"xl65\" style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 8<\/strong><\/td>\n<td class=\"xl65\" style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 9<\/strong><\/td>\n<td class=\"xl65\" style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 10<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>1<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">2 974 924<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">3 626 041<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">3 168 713<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">3 388 090<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">3 227 503<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">3 096 385<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">3 311 505<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">3 106 431<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">5 850 908<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">6 858 138<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\"><strong>2<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">7 488 020<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">6 759 442<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">6 342 084<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">6 897 963<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">6 930 675<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">6 194 285<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">6 484 264<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">6 825 409<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">10 338 656<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">11 143 377<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\"><strong>3<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">9 731 589<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">9 666 680<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">8 301 246<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">9 989 337<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">9 033 645<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">8 479 358<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">8 802 637<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">8 521 330<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">15 127 722<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">16 820 448<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\"><strong>4<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">11 342 694<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">12 631 045<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">13 785 834<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">11 875 416<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">11 307 826<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">13 630 759<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">9 703 166<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">10 914 339<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">20 571 744<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">16 632 365<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\"><strong>5<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">14 842 962<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">17 804 564<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">14 119 114<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">14 028 887<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">13 275 118<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">13 448 179<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">13 562 132<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">13 657 833<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">19 488 337<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">21 625 881<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\"><strong>7<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">17 510 482<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">20 492 942<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">19 293 589<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">20 508 735<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">20 729 582<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">19 119 414<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">20 355 196<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">17 187 445<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">26 006 437<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">27 962 282<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\"><strong>10<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">30 472 176<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">25 887 661<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">31 279 197<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">25 998 848<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">29 162 834<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">28 176 825<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">23 353 950<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">33 486 848<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">25 592 373<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">35 715 119<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>For use with ValChrom:\u00a0<\/strong><a href=\"https:\/\/sisu.ut.ee\/lcms_method_validation\/st_3.2_3_linearity_lof.xls\" data-fid=\"57415\">st_3.2_3_linearity_lof.xls<\/a><\/p>\n<p>\u00a0<\/p>\n<div class=\"h5p-iframe-wrapper\"><div class=\"video-placeholder-wrapper video-placeholder-wrapper--fixed\" style=\"height: 366px;\">\n\t\t\t    <div class=\"video-placeholder d-flex justify-content-center align-items-center\">\n\t\t\t        <div class=\"overlay text-white p-2 w-100 text-center d-block justify-content-center align-items-center\">\n\t\t\t            <div>To view third-party content, please accept cookies.<\/div>\n\t\t\t            <button class=\"btn btn-secondary btn-sm mt-1 consent-change\">Change consent<\/button>\n\t\t\t        <\/div>\n\t\t\t    <\/div>\n\t\t\t<\/div>\n<\/div>\n<p>\u00a0<\/p>\n<p>Number of degrees of freedom of the numerator: <input type=\"text\" size=\"10\" name=\"gap_98_1\" class=\"watupro-gap answer answerof-98\" value=\"\"><\/p>\n<p>Number of degrees of freedom of the denominator: <input type=\"text\" size=\"10\" name=\"gap_98_2\" class=\"watupro-gap answer answerof-98\" value=\"\"><\/p>\n<p><em>F<\/em><sub>calc<\/sub> (two decimal places, please use dot as decimals separator): <input type=\"text\" size=\"10\" name=\"gap_98_3\" class=\"watupro-gap answer answerof-98\" value=\"\"><\/p>\n<p><em>F<\/em><sub>tab<\/sub> (two decimal places, please use dot as decimals separator): <input type=\"text\" size=\"10\" name=\"gap_98_4\" class=\"watupro-gap answer answerof-98\" value=\"\"><\/p>\n<p>The data is: \u00a0 \u00a0 <select name=\"gap_98_5\" class=\"watupro-gap answer answerof-98\"><option value=\"\"><\/option><option value=\"non-linear\">non-linear<\/option><option value=\"linear\">linear<\/option><\/select><\/p>\n<input type=\"hidden\" name=\"question_id[]\" id=\"qID_6\" value=\"98\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType98\" class=\"answerTypeCnt6\" value=\"gaps\"><!-- end question-content--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-6\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-98\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn98\" class=\"liveResultBtn6 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(98, 6);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-7\" style=\";\"><div id=\"questionWrap-7\" class=\"   watupro-question-id-99\">\n\t\t\t<div class=\"question-content\"><p><span class=\"watupro_num\">7. <\/span>The following calibration graph data were obtained for determination of p-fluorophenol \u00a0by LC\/ESI\/MS.<\/p>\n<p>Estimate the linearity of the data using the lack-of-fit test (at confidence interval 95%). First, find the number of degrees of freedom, <em>F<\/em><sub>calc<\/sub>\u00a0and\u00a0<em>F<\/em><sub>tab<\/sub> (with two decimal places) using the lack-of-fit test. Finally, make the decision whether the data is linear or not based on the results of the lack-of-fit test (taking into account the intercept).<\/p>\n<p>The following calibration graph data were obtained for determination of p-fluorophenol \u00a0by LC\/ESI\/MS.<\/p>\n<table style=\"border: 1px solid black;\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>C (ppb)<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 1<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 2<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 3<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 4<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 5<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 6<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 7<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 8<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 9<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>Signal 10<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>20<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">36 449 861<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">36 888 155<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">32 219 333<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">33 196 471<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">32 326 262<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">35 074 226<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">28 129 835<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">36 848 161<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">39 674 913<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">33 808 145<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>30<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">40 351 801<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">41 797 570<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">40 528 223<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">45 076 575<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">47 327 788<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">41 996 321<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">44 686 369<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">49 518 885<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">51 429 781<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">45 594 101<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>40<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">66 063 890<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">55 178 465<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">67 927 212<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">62 250 446<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">65 294 621<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">63 856 017<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">58 586 452<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">61 876 327<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">64 588 452<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">72 767 976<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>50<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">75 849 041<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">66 870 341<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">68 518 238<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">82 923 976<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">70 050 481<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">67 712 405<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">62 964 889<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">79 380 677<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">82 290 539<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">72 643 550<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>60<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">91 162 054<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">93 907 067<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">97 300 810<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">80 248 759<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">89 904 739<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">85 377 851<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">96 722 100<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">87 694 620<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">72 274 178<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">79 284 838<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>70<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">97 109 471<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">91 566 813<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">96 975 278<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">92 257 334<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">92 740 327<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">94 266 014<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">92 254 969<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">99 750 169<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">96 505 415<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">97 801 240<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>80<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">107 230 631<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">106 149 105<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">108 177 108<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">104 742 812<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">101 610 922<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">102 576 475<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">102 545 700<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">109 925 570<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">109 492 124<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">105 605 149<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>90<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">109 824 920<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">108 295 836<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">110 294 873<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">109 376 258<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">107 283 751<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">110 924 823<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">109 347 856<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">109 925 570<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">110 927 435<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">107 165 040<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\"><strong>100<\/strong><\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">110 000 871<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">110 935 700<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">100 984 517<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">109 376 258<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">107 283 751<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">110 924 823<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">109 347 856<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">109 925 570<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">108 952 742<\/td>\n<td style=\"text-align: center; border: 1px solid black; font-size: 12px;\" align=\"right\">101 844 380<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u00a0<\/p>\n<p><strong>For use with ValChrom:\u00a0<\/strong><a href=\"https:\/\/sisu.ut.ee\/lcms_method_validation\/st_3.2_6_linearity_lof.xls\" data-fid=\"57416\">st_3.2_6_linearity_lof.xls<\/a><\/p>\n<p>Please evaluate the linearity of the corresponding calibration graphs by using the lack-of-fit test and decide whether it is justified to use a linear calibration model.<\/p>\n<p>\u00a0<\/p>\n<div class=\"h5p-iframe-wrapper\"><div class=\"video-placeholder-wrapper video-placeholder-wrapper--fixed\" style=\"height: 366px;\">\n\t\t\t    <div class=\"video-placeholder d-flex justify-content-center align-items-center\">\n\t\t\t        <div class=\"overlay text-white p-2 w-100 text-center d-block justify-content-center align-items-center\">\n\t\t\t            <div>To view third-party content, please accept cookies.<\/div>\n\t\t\t            <button class=\"btn btn-secondary btn-sm mt-1 consent-change\">Change consent<\/button>\n\t\t\t        <\/div>\n\t\t\t    <\/div>\n\t\t\t<\/div>\n<\/div>\n<p>\u00a0<\/p>\n<p>Number of degrees of freedom of the numerator: <input type=\"text\" size=\"10\" name=\"gap_99_1\" class=\"watupro-gap answer answerof-99\" value=\"\"><\/p>\n<p>Number of degrees of freedom of the denominator: <input type=\"text\" size=\"10\" name=\"gap_99_2\" class=\"watupro-gap answer answerof-99\" value=\"\"><\/p>\n<p><em>F<\/em><sub>calc<\/sub> (two decimal places, please use dot as decimals separator): <input type=\"text\" size=\"10\" name=\"gap_99_3\" class=\"watupro-gap answer answerof-99\" value=\"\"><\/p>\n<p><em>F<\/em><sub>tab<\/sub> (two decimal places, please use dot as decimals separator): <input type=\"text\" size=\"10\" name=\"gap_99_4\" class=\"watupro-gap answer answerof-99\" value=\"\"><\/p>\n<p>The data is: \u00a0 \u00a0 <select name=\"gap_99_5\" class=\"watupro-gap answer answerof-99\"><option value=\"\"><\/option><option value=\"linear\">linear<\/option><option value=\"non-linear\">non-linear<\/option><\/select><\/p>\n<input type=\"hidden\" name=\"question_id[]\" id=\"qID_7\" value=\"99\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType99\" class=\"answerTypeCnt7\" value=\"gaps\"><!-- end question-content--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-7\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-99\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn99\" class=\"liveResultBtn7 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(99, 7);\"><\/p>\n\t   <div style=\"display:none\" id=\"question-8\">\n\t<div class=\"question-content\">\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t<\/div>\n<\/div>\n\n<br>\n\t\n\t\t\t<div class=\"watupro_buttons flex \" id=\"watuPROButtons23\">\n\t\t  <div id=\"prev-question\" style=\"display:none;\"><input type=\"button\" value=\"&lt; Previous\" onclick=\"WatuPRO.nextQuestion(event, 'previous');\"><\/div>\t\t  \t\t  \t\t   \n\t\t   \t  \t\t<div><input type=\"button\" name=\"action\" class=\"watupro-submit-button\" onclick=\"WatuPRO.submitResult(event)\" id=\"action-button\" value=\"View Results\">\n\t\t<\/div>\n\t\t<\/div>\n\t\t\n\t<input type=\"hidden\" name=\"quiz_id\" value=\"23\" id=\"watuPROExamID\">\n\t<input type=\"hidden\" name=\"start_time\" id=\"startTime\" value=\"2026-04-17 21:52:53\">\n\t<input type=\"hidden\" name=\"start_timestamp\" id=\"startTimeStamp\" value=\"1776462773\">\n\t<input type=\"hidden\" name=\"question_ids\" value=\"\">\n\t<input type=\"hidden\" name=\"watupro_questions\" value=\"93:231,232 | 94:233,234 | 95:235,236,237,238 | 96:239,240,241,242 | 97:243,244,245,246 | 98: | 99:\">\n\t<input type=\"hidden\" name=\"no_ajax\" value=\"0\">\t\t\t<\/form>\n\t<p>\u00a0<\/p>\n<\/div>\n\n<script type=\"text\/javascript\">\n\/\/jQuery(document).ready(function(){\ndocument.addEventListener(\"DOMContentLoaded\", function(event) { \t\nvar question_ids = \"93,94,95,96,97,98,99\";\nWatuPROSettings[23] = {};\nWatuPRO.qArr = question_ids.split(',');\nWatuPRO.exam_id = 23;\t    \nWatuPRO.post_id = 1146;\nWatuPRO.store_progress = 0;\nWatuPRO.curCatPage = 1;\nWatuPRO.requiredIDs=\"0\".split(\",\");\nWatuPRO.hAppID = \"0.36426900 1776451973\";\nvar url = \"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/show_exam.php\";\nWatuPRO.examMode = 1;\nWatuPRO.siteURL=\"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-admin\/admin-ajax.php\";\nWatuPRO.emailIsNotRequired = 0;\nWatuPRO.progressBarMode = 'answered';;\nWatuPRO.perDecade = 10;\nWatuPROIntel.init(23);\nWatuPRO.inCategoryPages=1;});    \t \n<\/script>\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":60,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-1146","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/pages\/1146","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/users\/60"}],"replies":[{"embeddable":true,"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/comments?post=1146"}],"version-history":[{"count":0,"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/pages\/1146\/revisions"}],"wp:attachment":[{"href":"https:\/\/sisu.ut.ee\/lcms_method_validation\/wp-json\/wp\/v2\/media?parent=1146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}