期刊刊名：全球商業經營管理學報 　 卷期：2期

篇名出版日期：2010年9月1日

作者：Pei-Hsi Lee,Chih-Ping Chiang

語言：English

關鍵字：全距管制圖,適應性管制圖,統計性設計,馬可夫鏈方法,gamma 分配,Range control chart, adaptive control charts, statistical design, Markov chain method, gamma distribution

被點閱次數：1次

閱讀時間：7sec

摘要：
Range control charts with variable sampling interval (VSI R chart) have better performance in monitoring the variation of process standard deviation under normality. However, the process observations may violate normality and follow a gamma distribution as a skewed distribution. This paper presented the performance of VSI R chart under gamma distribution assumption. A comparative study shows that VSI R chart has better performance than Shewhart R chart under normal and gamma distribution, but VSI R chart will become un-sensitivity when the population is far away from normality.

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