{"id":608,"date":"2024-06-19T09:04:32","date_gmt":"2024-06-19T06:04:32","guid":{"rendered":"https:\/\/sisu.ut.ee\/measurement\/self-test-6\/"},"modified":"2024-06-19T09:04:32","modified_gmt":"2024-06-19T06:04:32","slug":"self-test-6","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/measurement\/self-test-6\/","title":{"rendered":"Self-test 6"},"content":{"rendered":"<div id=\"watupro_quiz\" class=\"quiz-area single-page-quiz\">\n<p id=\"submittingExam22\" 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-22\" enctype=\"multipart\/form-data\">\n<div class=\"watu-question \" id=\"question-1\" style=\";\"><div id=\"questionWrap-1\" class=\"   watupro-question-id-77\">\n\t\t\t<div class=\"question-content\"><div><strong>1.<\/strong> Bioactive amines are determined by HPLC in brain dialysate. Calibration graphs are prepared daily using the same sample introduction system (cooled autosampler) as for the sample. Which of the following uncertainty causing effects are systematic <strong>within a day<\/strong>?<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_1\" value=\"77\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType77\" class=\"answerTypeCnt1\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices77\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-77[]\" id=\"answer-id-271\" class=\"answer   answerof-77 \" value=\"271\"><label for=\"answer-id-271\" id=\"answer-label-271\" class=\" answer\"><span><p>Because of the nature of the dialysis procedure the dialysate samples are stored at room temperature before loading them to the cooled autosampler possibly causing partial decomposition of the analytes.\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-77[]\" id=\"answer-id-270\" class=\"answer   answerof-77 \" value=\"270\"><label for=\"answer-id-270\" id=\"answer-label-270\" class=\" answer\"><span><p>Uncertainty of pipetting when making the calibration solutions (different pipettes are used on different days).\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-77[]\" id=\"answer-id-272\" class=\"answer   answerof-77 \" value=\"272\"><label for=\"answer-id-272\" id=\"answer-label-272\" class=\" answer\"><span><p>The laboratory is not well air-conditioned \u2013 when the weather is cold then air temperature in the laboratory is quite low, when the weather is hot then the laboratory temperature is quite high.\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-77[]\" id=\"answer-id-269\" class=\"answer   answerof-77 \" value=\"269\"><label for=\"answer-id-269\" id=\"answer-label-269\" class=\" answer\"><span><p>Actual injection volume of the autosampler is by 5% higher than the analyst thinks.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-77[]\" id=\"answer-id-267\" class=\"answer   answerof-77 \" value=\"267\"><label for=\"answer-id-267\" id=\"answer-label-267\" class=\" answer\"><span><p>Baseline noise of the chromatogram.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-77[]\" id=\"answer-id-268\" class=\"answer   answerof-77 \" value=\"268\"><label for=\"answer-id-268\" id=\"answer-label-268\" class=\" answer\"><span><p>Repeatability of integration.<\/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-77\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn77\" class=\"liveResultBtn1 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(77, 1);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-2\" style=\";\"><div id=\"questionWrap-2\" class=\"   watupro-question-id-78\">\n\t\t\t<div class=\"question-content\"><div><span style=\"line-height: 1.6em;\"><strong>2.<\/strong> Bioactive amines are determined by HPLC in brain dialysate. Calibration graphs are prepared daily using the same sample introduction system (cooled autosampler) as for the sample. Which of the following uncertainty causing effects are systematic in the <\/span><strong style=\"line-height: 1.6em;\">long term<\/strong><span style=\"line-height: 1.6em;\">\u00a0(i.e. during one year)?\u00a0<\/span><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_2\" value=\"78\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType78\" class=\"answerTypeCnt2\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices78\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-78[]\" id=\"answer-id-278\" class=\"answer   answerof-78 \" value=\"278\"><label for=\"answer-id-278\" id=\"answer-label-278\" class=\" answer\"><span><p>The laboratory is not well air-conditioned \u2013 when the weather it cold then air temperature in the laboratory is quite low, when the weather is hot then the laboratory temperature is quite high.\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-78[]\" id=\"answer-id-273\" class=\"answer   answerof-78 \" value=\"273\"><label for=\"answer-id-273\" id=\"answer-label-273\" class=\" answer\"><span><p>Baseline noise of the chromatogram.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-78[]\" id=\"answer-id-275\" class=\"answer   answerof-78 \" value=\"275\"><label for=\"answer-id-275\" id=\"answer-label-275\" class=\" answer\"><span><p>Actual injection volume of the autosampler is by 5% higher than the analyst thinks.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-78[]\" id=\"answer-id-274\" class=\"answer   answerof-78 \" value=\"274\"><label for=\"answer-id-274\" id=\"answer-label-274\" class=\" answer\"><span><p>Repeatability of integration.<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-78[]\" id=\"answer-id-276\" class=\"answer   answerof-78 \" value=\"276\"><label for=\"answer-id-276\" id=\"answer-label-276\" class=\" answer\"><span><p>Uncertainty of pipetting when making the calibration solutions (different pipettes are used on different days).<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-78[]\" id=\"answer-id-277\" class=\"answer   answerof-78 \" value=\"277\"><label for=\"answer-id-277\" id=\"answer-label-277\" class=\" answer\"><span><p>Because of the nature of the dialysis procedure the dialysate samples are stored at room temperature before loading them to the cooled autosampler possibly causing partial decomposition of the analytes.<\/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-78\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn78\" class=\"liveResultBtn2 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(78, 2);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-3\" style=\";\"><div id=\"questionWrap-3\" class=\"   watupro-question-id-80\">\n\t\t\t<div class=\"question-content\"><div><strong>3.<\/strong> If a standard deviation <em>s<\/em> of analysis of the same stable control sample is collected over a long period of time (measured during 1 year once a week) then\u00a0what kind of precision does <em>s <\/em>express?\u00a0(There can be several correct answers)<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_3\" value=\"80\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType80\" class=\"answerTypeCnt3\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices80\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-80[]\" id=\"answer-id-281\" class=\"answer   answerof-80 \" value=\"281\"><label for=\"answer-id-281\" id=\"answer-label-281\" class=\" answer\"><span><p>Recovery\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-80[]\" id=\"answer-id-280\" class=\"answer   answerof-80 \" value=\"280\"><label for=\"answer-id-280\" id=\"answer-label-280\" class=\" answer\"><span><p>Repeatability\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-80[]\" id=\"answer-id-284\" class=\"answer   answerof-80 \" value=\"284\"><label for=\"answer-id-284\" id=\"answer-label-284\" class=\" answer\"><span><p>Within-lab reproducibility<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-80[]\" id=\"answer-id-282\" class=\"answer   answerof-80 \" value=\"282\"><label for=\"answer-id-282\" id=\"answer-label-282\" class=\" answer\"><span><p>Between-lab reproducibility\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-80[]\" id=\"answer-id-283\" class=\"answer   answerof-80 \" value=\"283\"><label for=\"answer-id-283\" id=\"answer-label-283\" class=\" answer\"><span><p>Intermediate precision<\/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-80\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn80\" class=\"liveResultBtn3 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(80, 3);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-4\" style=\";\"><div id=\"questionWrap-4\" class=\"   watupro-question-id-81\">\n\t\t\t<div class=\"question-content\"><div><strong>4.<\/strong> If a standard deviation <em>s<\/em> of analysis of the same stable control sample is collected over a long period of time (measured during 1 year once a week) then\u00a0which of the following within day systematic effects will become random effects in the long term and will be taken into account by <em>s<\/em>?<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_4\" value=\"81\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType81\" class=\"answerTypeCnt4\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices81\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-81[]\" id=\"answer-id-288\" class=\"answer   answerof-81 \" value=\"288\"><label for=\"answer-id-288\" id=\"answer-label-288\" class=\" answer\"><span><p>Incomplete sample matrix decomposition caused by too short digestion time\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-81[]\" id=\"answer-id-285\" class=\"answer   answerof-81 \" value=\"285\"><label for=\"answer-id-285\" id=\"answer-label-285\" class=\" answer\"><span><p>Above average room temperature on a particularly hot day<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-81[]\" id=\"answer-id-287\" class=\"answer   answerof-81 \" value=\"287\"><label for=\"answer-id-287\" id=\"answer-label-287\" class=\" answer\"><span><p>Recovery different from 1<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-81[]\" id=\"answer-id-286\" class=\"answer   answerof-81 \" value=\"286\"><label for=\"answer-id-286\" id=\"answer-label-286\" class=\" answer\"><span><p>Systematic effect caused by the calibration graph<\/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-81\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn81\" class=\"liveResultBtn4 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(81, 4);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-5\" style=\";\"><div id=\"questionWrap-5\" class=\"   watupro-question-id-79\">\n\t\t\t<div class=\"question-content\"><div><strong>5.A<\/strong> An analyst carried out parallel determinations of chromium in different soil samples as specified in the following table. The measurements were done by the same person using the same procedure.<br>\r\n<table style=\"border: 1px solid #000000;\" border=\"1\" cellspacing=\"0\" cellpadding=\"4\"><tbody><tr><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">Sample No<\/p><\/td><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">Date<\/p><\/td><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">Std dev (mg\/kg)<\/p><\/td><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">Number of measurements<\/p><\/td><\/tr><tr><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">72<\/p><\/td><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">12.10.2011<\/p><\/td><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">1.24<\/p><\/td><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">4<\/p><\/td><\/tr><tr><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">89<\/p><\/td><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">18.11.2011<\/p><\/td><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">0.92<\/p><\/td><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">2<\/p><\/td><\/tr><tr><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">124<\/p><\/td><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">14.12.2011<\/p><\/td><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">1.86<\/p><\/td><td style=\"border: 1px solid #000000;\" valign=\"top\"><p align=\"center\">3<\/p><\/td><\/tr><\/tbody><\/table><p class=\"Domanda\"><span style=\"line-height: 1.6em;\">Please calculate the pooled standard deviation (with unit). Please present the answer with three significant digits.<\/span><\/p><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_5\" value=\"79\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType79\" class=\"answerTypeCnt5\" value=\"textarea\"><!-- end question-content--><\/div><div class=\"question-choices \" id=\"questionChoices79\"><p><input type=\"text\" name=\"answer-79[]\" id=\"textarea_q_79\" class=\"watupro-text\" value=\"\" size=\"60\"><\/p><!-- 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-79\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn79\" class=\"liveResultBtn5 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(79, 5);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-6\" style=\";\"><div id=\"questionWrap-6\" class=\"   watupro-question-id-82\">\n\t\t\t<div class=\"question-content\"><div><strong>5.B<\/strong> What type of precision is expressed by this pooled standard deviation?<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_6\" value=\"82\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType82\" class=\"answerTypeCnt6\" value=\"radio\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices82\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-82[]\" id=\"answer-id-290\" class=\"answer   answerof-82 \" value=\"290\"><label for=\"answer-id-290\" id=\"answer-label-290\" class=\" answer\"><span><p>A-Type precision\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-82[]\" id=\"answer-id-292\" class=\"answer   answerof-82 \" value=\"292\"><label for=\"answer-id-292\" id=\"answer-label-292\" class=\" answer\"><span><p>Repeatability<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-82[]\" id=\"answer-id-289\" class=\"answer   answerof-82 \" value=\"289\"><label for=\"answer-id-289\" id=\"answer-label-289\" class=\" answer\"><span><p>Within-lab long term reproducibility\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-82[]\" id=\"answer-id-293\" class=\"answer   answerof-82 \" value=\"293\"><label for=\"answer-id-293\" id=\"answer-label-293\" class=\" answer\"><span><p>Recovery<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-82[]\" id=\"answer-id-291\" class=\"answer   answerof-82 \" value=\"291\"><label for=\"answer-id-291\" id=\"answer-label-291\" class=\" answer\"><span><p>Bias\u00a0<\/p><\/span><\/label><\/div><!-- end question-choices--><\/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-82\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn82\" class=\"liveResultBtn6 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(82, 6);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-7\" style=\";\"><div id=\"questionWrap-7\" class=\"   watupro-question-id-83\">\n\t\t\t<div class=\"question-content\"><div><strong>6<\/strong>. In a lab parallel determinations of fluoride ion concentration in water samples were carried out as specified in the following table and graph. The measurements were made by different persons using the same measurement procedure.<br>\r\n<table class=\"alignleft\" style=\"height: 312px; width: 37.3275%; border-style: solid; border-color: #c8c8c8;\" border=\"1px\" width=\"37.3275%\" cellspacing=\"0\" cellpadding=\"4\"><tbody><tr style=\"height: 26px;\"><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\" width=\"72\"><strong>No<\/strong><\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\" width=\"99\"><strong>Date<\/strong><\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\" width=\"97\"><strong>Result (mg\/l)<\/strong><\/td><\/tr><tr style=\"height: 26px;\"><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">7<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">08.12.2011<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">3.83<\/td><\/tr><tr style=\"height: 26px;\"><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">7<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">17.07.2012<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">3.97<\/td><\/tr><tr style=\"height: 26px;\"><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">7<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">04.10.2012<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">4.01<\/td><\/tr><tr style=\"height: 26px;\"><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">7<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">02.02.2013<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">3.78<\/td><\/tr><tr style=\"height: 26px;\"><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">23<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">05.01.2012<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">1.47<\/td><\/tr><tr style=\"height: 26px;\"><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">23<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">17.08.2012<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">1.73<\/td><\/tr><tr style=\"height: 26px;\"><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">23<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">19.03.2013<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">1.56<\/td><\/tr><tr style=\"height: 26px;\"><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">41<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">10.11.2011<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">2.4<\/td><\/tr><tr style=\"height: 26px;\"><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">41<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">29.05.2012<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">2.87<\/td><\/tr><tr style=\"height: 26px;\"><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">41<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">28.02.2013<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">2.52<\/td><\/tr><tr style=\"height: 26px;\"><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">41<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">01.05.2013<\/td><td style=\"height: 26px; border: 1px solid #000000; text-align: center;\">2.64<\/td><\/tr><\/tbody><\/table>\u00a0<br>\r\n<p style=\"text-align: left;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-738 alignnone\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/Pooled-st-dev.png\" alt=\"\" width=\"482\" height=\"297\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/Pooled-st-dev.png 482w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/Pooled-st-dev-300x185.png 300w\" sizes=\"auto, (max-width: 482px) 100vw, 482px\"><\/p>\u00a0<br>\r\n<br>\r\nPlease calculate from these data the within-lab reproducibility standard deviation <em>s<\/em><sub>RW<\/sub>. 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