The effect of gauge measurement capability on MC p and its statistical properties

Purpose – The aim of this paper is to consider the effect of gauge measurement capability on the multivariate process capability index ( MC p ). Design/methodology/approach – With respect to measurement capability, the paper investigates the statistical properties of the estimated MC p and considers the effect of gauge measurement capability on the lower confidence bound, hypothesis testing, critical value and power of testing for MC p at the mentioned state. Findings – The results show that gauge measurement capabilities will notably change the results of estimating and testing the process capability index. Originality/value – The research would help quality experts to determine whether their processes meet the required capability, and to make more reliable decisions.