{"id":1177,"date":"2024-04-11T14:36:02","date_gmt":"2024-04-11T11:36:02","guid":{"rendered":"https:\/\/sisu.ut.ee\/lcms_method_validation\/self-test-7\/"},"modified":"2024-04-11T14:36:02","modified_gmt":"2024-04-11T11:36:02","slug":"self-test-7","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/lcms_method_validation\/self-test-7\/","title":{"rendered":"Self test 7"},"content":{"rendered":"
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1. <\/span>What types of performance characteristics are described?\u00a0Please choose correct characteristic.<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
Description<\/strong><\/td>\nCharacteristic<\/strong><\/td>\n<\/tr>\n
Mean value of 6 measurement results of the same sample was 5.2 mg\/L, reference value was 5.0 mg\/L.<\/td>\n\u00a0
Standard deviation of the mean of 6 titration results of the same sample was 0.02 mL.<\/td>\n\u00a0
Repeatability of the method obtained as the pooled standard deviation from 127 measurement results.<\/td>\n\u00a0
Measurement uncertainty was estimated as \u00b10.2 mg\/L, k<\/em> = 2.<\/td>\n\u00a0
Relative expanded uncertainty of the method is in the range of 0.9 \u2013 1.1%, k<\/em> = 2, depending on measurement conditions.<\/td>\n\u00a0
Analyte loss occurs during sample pre-treatment, causing systematically lower results. Lowering of the results has been estimated to be on an average 5%.<\/td>\n\u00a0<\/div><\/div><\/div>
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2. <\/span>Which of the following is true?<\/div><\/div>