期刊刊名：管理科學與統計決策 　 卷期：7卷2期

篇名出版日期：2010年6月1日

作者：Bao-cai Guo,Bing Xu

語言：English

關鍵字：control chart,asymmetric sampling interval,asymmetric loss

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摘要：
In many production process, upward and downward shifts of process mean imply different losses. But the most literature don’t involved this issue. To meet the need of quality control in these situations, this paper proposed two X charts with asymmetric sampling intervals. Numerical results indicate that, comparing with standard Shewhart charts, using asymmetric sampling intervals is more efficient in detecting the shifts in one direction, without ignoring the shifts in the other direction. Using the warning limit may speed up in detecting the shifts in one direction.

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