Monitoring Process Mean and Variability with One EWMA Chart
Monitoring Process Mean and Variability with One EWMA Chart
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DOI：
10.1080/00224065.2001.11980069
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发表时间：
2001-04
影响因子：
2.5
通讯作者：
Gemai Chen;Smiley W. Cheng;Hansheng Xie
中科院分区：
文献类型：
--
作者：
Gemai Chen;Smiley W. Cheng;Hansheng Xie
通常需要两个 EWMA 图表来监控过程平均值和变异性。在本文中，我们提出了一种新的 EWMA 图表，它将通常的两个 EWMA 图表有效地组合成一个图表。特别是，新的 EWMA 图表具有可有效检测平均值和/或变异性的增加和减少的特性。
Two EWMA charts are usually required to monitor both process mean and variability. In this paper, we propose a new EWMA chart which effectively combines the usual two EWMA charts into one chart. In particular, the new EWMA chart has the property that it is effective in detecting both increases and decreases in mean and/or variability.