The Effect of Non-Normality and Measurement Error on the Economic Design of X Control Chart

J. R. Singh, N. Singh

Abstract: An attempt is made to determine the effect of non-normality and measurement error on the economic design of X control chart. For non-normal population, we have considered the first four terms of an Edgeworth series. As one will be interested in having a suitable economic control chart under measurement error for non-normal variables, the optimum values of sample size n and sampling interval h are determined for different values of k.

Keywords: Non-normality X, control chart, Edgeworth series, Measurement error