Uncertainties of method performance statistics based on a balanced completely randomized model interlaboratory study.
Using exact and asymptotic distributions, formulas were developed to derive population variances and uncertainties, and their corresponding unbiased estimates, for the method performance statistics, i.e., the sample mean (y..), the repeatability variance and standard deviation and (s2r and sr), and the reproducibility variance and standard deviation (s2R and sR) and obtained from collaborative study of an analytical method.
U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, Communication and Emergency Response, Division of Public Health and Biostatistics, Biostatistics Branch, College Park, MD 20740-3835, USA. fdmc5100@yahoo.com
Foster D
FD
McClure
Jung K
JK
Lee
D000704:Analysis of Variance; D001699:Biometry; D002623:Chemistry Techniques, Analytical / Q000379:methods / Q000706:statistics & numerical data*; D003299:Cooperative Behavior; D007753:Laboratories / Q000706:statistics & numerical data; D015233:Models, Statistical; D011897:Random Allocation; D015203:Reproducibility of Results