The Average Run Length Performance of a Multivariate Exponentially Weighted Moving Average Control Chart Procedure with Application
International Journal of Business and Statistical Analysis • 2014
Publication Information
Authors
Mohamed Hamed
Keywords
Quality Control, Multivariate Analysis, MEWMA, (Multivariate Exponentially Weighted Moving Average).
Journal
International Journal of Business and Statistical Analysis
Publisher
Scientific Publishing Center, University of Bahrain
Volume
1
Issue
1
Pages
1-14
publication.type
International
Paper Link
Open Link
Supplementary Materials
Not Available
Abstract
One of the most powerful tools in quality control is the statistical control chart. First developed in the 1920's by Walter Shewhart, the control chart found widespread use during World War II and has been employed, with various modifications ever since. The drawbacks to multivariate charting schemes is their inability to identify which variable was the source of the signal. The multivariate exponentially weighted moving average (MEWMA) developed by Lowry, et al (1992) is an example of a multivariate charting scheme whose monitoring statistic is unable to determine which variable caused the signal. In this paper, the run length performance of multivariate exponentially weighted moving average (MEWMA) chart with application is studied. Industry fertilizers is important one of the chemical industries in Egypt, so that this work concerns the fertilizers industries quality control, especially urea fertilizer with application on Delta fertilizer and chemical industries which is considered on of the leading companies the field of fertilizer production in Middle east with application of multivariate quality control procedures to achieve best one procedure for multivariate quality control.
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