MAX CHART: COMBINING X-BAR CHART AND S CHART
暂无分享,去创建一个
Control chart techniques have been widely used in industries to monitor a process in quality improvement. Whenever we deal with variables data, we usually employ a combination of X-bar chart and R chart (or S chart) to monitor both the center and the spread of the process. In this paper, we propose a simple alternative, that is, we design a single chart to monitor both the center and the spread for variables data. When compared with the combination of X-bar chart and Sc hart, the proposed chart is shown to be just as ef fective. An example is given to show how to use this new chart.
[1] Douglas C. Montgomery,et al. Introduction to Statistical Quality Control , 1986 .
[2] Smiley W. Cheng,et al. Semicircle Control Chart for Variables Data , 1996 .
[3] Dennis W. King. Statistical Quality Design and Control , 1993 .
[4] Rickie J. Domangue,et al. Some omnibus exponentially weighted moving average statistical process monitoring schemes , 1991 .
[5] G. B. Wetherill,et al. Quality Control and Industrial Statistics , 1975 .