1. A method for analyzing accuracy of industrial measurement data, the method comprising the steps of: compiling a plurality of measurements of a primary characteristic from a representative cross-section of a population of devices; providing a modeling function; determining a variance from the modeling function for each measurement in the plurality of measurements to form a corresponding plurality of variances; evaluating the plurality of variances for discontinuities; identifying a discontinuity within the plurality of variances; and utilizing the discontinuity to determine a demarcation between accurate and inaccurate measurement data.