
	Journal of Applied Sciences
	Year: 2006 \| Volume: 6 \| Issue: 12 \| Page No.: 2676-2678 DOI: 10.3923/jas.2006.2676.2678

Effect of Scale Parameters in the Performance of Shewhart Control Chart with Interpretation Rules

Abdul Sattar Jamali, Li Jin Lin and Dai Yingzhuo

Abstract: It is common in practice that the Shewhart

chart usually supplemented with interpretation rules in order to detect the small shifts in the process mean. In this study the effect of scale parameters in the performance of the Shewhart

control chart of the most used seven interpretation rules were obtained through by developing a spread sheet for normal and gamma distributions when process remains in control. The results show that the in-control performance can be fairly high for particular rules when the underlying data from a gamma distribution rather than normal distribution considering scale parameters. It was also observed that the in-control performance of gamma distribution grows larger when the scale parameter increases.

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How to cite this article:

Abdul Sattar Jamali, Li Jin Lin and Dai Yingzhuo, 2006. Effect of Scale Parameters in the Performance of Shewhart Control Chart with Interpretation Rules. Journal of Applied Sciences, 6: 2676-2678.

DOI: 10.3923/jas.2006.2676.2678

URL: https://scialert.net/abstract/?doi=jas.2006.2676.2678

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