ASTM E876-89(1994)e1

1.1 This practice provides for the statistical evaluation of data obtained from spectrometrical methods of analysis. Included are definitions used in statistics, methods to determine variance and standard deviation of data, and calculations for (1) estimate of variance and pooling estimates of variance, (2) standard deviation and relative standard deviation, (3) testing for outliers, (4) testing for bias, (5) establishing limits of detection, and (6) testing for drift.