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Analytical Figures of Merit Quiz

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Specificity measures precision under conditions of same method, sample, laboratory, operator, and equipment, while selectivity measures the proportionality of measured value to analyte concentration or mass.
Specificity measures the ability to measure the desired analyte specifically, while selectivity measures the ability to measure the desired analyte specifically in the presence of other components. (correct)
Specificity measures the agreement between a single measured result and true value, while selectivity measures precision under conditions of same method, sample, laboratory, operator, and equipment.
Specificity measures the ability to measure the desired analyte specifically in the presence of other components, while selectivity measures the ability to measure the desired analyte specifically.

The lowest amount of analyte that can be detected.
The change in the response of a measuring instrument divided by the change in the corresponding stimulus. (correct)
The fraction of analyte added to the test sample prior to analysis that is measured by the method.
The ability of a method to remain unaffected by small changes in parameters.

Accuracy measures agreement between a single measured result and true value, while trueness measures agreement between mean measured result and true value. (correct)
Accuracy measures precision under conditions of same method, sample, laboratory, operator, and equipment, while trueness measures precision under conditions of same method and sample but different laboratory, operator, and equipment.
Accuracy measures proportionality of measured value to analyte concentration or mass, while trueness measures concentration interval where method is precise, accurate, and linear.
Accuracy measures the lowest amount of analyte that can be detected, while trueness measures the lowest amount of analyte that can be measured or quantified.