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This paper investigates the efficiency of Gini’s mean difference (GMD) as a measure of variability in two commonly used process capability indices (PCIs), i.e., Cp and Cpk. A comparison has been carried out to evaluate the performance of GMD-based PCIs and Pearn and Chen quantile-based PCIs under low, moderate, and high asymmetry using Weibull distribution. The simulation results, under low and moderate...
This paper explained the development and the problems of process capability index; To explored the optimal ways of process capability index; To established process capability index model based on quality loss minimum.
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