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AACC International Approved Methods -AACC Method 78-60.01. Statistical Evaluation of Test Methods -- Estimation of Variance in Analytical Tests

AACC International Approved Methods

Statistical Principles

AACCI Method 78-60.01
Statistical Evaluation of Test Methods -- Estimation of Variance in Analytical Tests

VIEW METHOD

Objective
Variation in analytical results is expressed in terms of "within-laboratory" and "between-laboratory" variations. Within-laboratory variation includes variation of replications, analysts, and days. Between-laboratory variation is within-laboratory variation plus the variation among laboratories. This design is applicable to analyzing variability in any analytical method. Modification of design may be necessary in some cases, but this should be done under proper guidance.