Inspector Error Models: An Empirical Investigation

Abstract

A considerable amount of recent effort in the field of statistical quality control has been devoted to the analysis of the effects of inspector error on various quality control techniques. These analyses have employed models of inspector performance which are presumed to describe the errors which are made by inspectors. This paper examines two such models on an experimental basis to determine whether or not they actually describe inspector performance. The results indicate no significant lack of fit and, hence, indicate that the models provide generally good descriptions of performance.