Definition and Assessment of Sampling and Analytical Accuracy

摘要

Two independent definitions for quantifying measurement accuracy and two limiting schemes for their assessment are examined in this paper. Gauss' mean square error MSE is compared to the symmetric-range accuracy A, describing the range of measurements about a measurand. Both measures of accuracy account for systematic error(bias) and imprecision so as to quan- Tify the closeness of estimates to the actual values being measured. Remarkably, it is found That the accuracy functions are closely equivalent for most method applications.