Effect of Sample Size on the Control Limits of Exponentially Weighted Moving Average Distance Square SchemeReportar como inadecuado




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In the series of quality monitoring schemes with exponentially weightedmoving average, the exponentially weighted moving average distance squarescheme was introduced for joint monitoring of process mean and variance. Thisscheme claims that it has a special feature that the control limits of thescheme are independent of sample size and therefore it gives more freedom tothe users. However, this claim was not studied in detail. In this study, thecontrol limits were found for this scheme through simulations, for differentsample sizes with different combination of other scheme parameters. This studyconcludes that the control limits for designing this scheme are independent ofsample size.

KEYWORDS

Average Run Length, Control Limit, Exponential Weighted Moving Average, Joint Monitoring

Cite this paper

Razmy, A. 2016 Effect of Sample Size on the Control Limits of Exponentially Weighted Moving Average Distance Square Scheme. Open Access Library Journal, 3, 1-7. doi: 10.4236-oalib.1102663.





Autor: Athambawa Mohamed Razmy

Fuente: http://www.scirp.org/



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