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Journal of Korean Society for Quality Management 1995;23(4): 1-. |
| A Study of Control Chart for Skewness |
| Young Rok Chun |
| Dept. of Computer Science and Statistics, Kyungnam University |
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| ABSTRACT |
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Sample skewness has not received much attention from researchers to design a control chart. In this paper, control charts based on two skewness measures are studied to control a manufacturing process. One skewness measure is the third central moment about mean, the other is the third L-moment which is a linear combination of order statistics. Since the exact sampling distributions of two skewness measures are unknown, empirical sampling distributions are studied using simulation. The sampling distributions are used to design control charts for skewness and performance of two skewness measures is compared. |
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