An EWMA control chart for monitoring the mean of skewed populations using weighted variance

• المؤلفون الرئيسيون: Khoo, Michael B. C., Atta, Abdu M. A.
• التنسيق: Conference or Workshop Item
• اللغة: English
• منشور في: 2008
• الموضوعات: QA Mathematics
• الوصول للمادة أونلاين: http://repo.uum.edu.my/14767/1/27.pdf; http://repo.uum.edu.my/14767/; http://doi.org/10.1109/IEEM.2008.4737863

This paper discusses the use of weighted variance (WV) in setting up the limits of the exponentially weighted moving average (EWMA) chart for the monitoring of the mean of a process from a skewed population. This chart, called the WV-EWMA chart hereafter, reduces to the standard EWMA chart when the...