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On the improvement of one-sided S control charts

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  • Athanasios C. Rakitzis
  • Demetrios L. Antzoulakos

Abstract

The most common charting procedure used for monitoring the variance of the distribution of a quality characteristic is the S control chart. As a Shewhart-type control chart, it is relatively insensitive in the quick detection of small and moderate shifts in process variance. The performance of the S chart can be improved by supplementing it with runs rules or by varying the sample size and the sampling interval. In this work, we introduce and study one-sided adaptive S control charts, supplemented or not with one powerful runs rule, for detecting increases or decreases in process variation. The properties of the proposed control schemes are obtained by using a Markov chain approach. Furthermore, a practical guidance for the choice of the most suitable control scheme is also provided.

Suggested Citation

  • Athanasios C. Rakitzis & Demetrios L. Antzoulakos, 2011. "On the improvement of one-sided S control charts," Journal of Applied Statistics, Taylor & Francis Journals, vol. 38(12), pages 2839-2858, February.
    • Handle: RePEc:taf:japsta:v:38:y:2011:i:12:p:2839-2858
    DOI: 10.1080/02664763.2011.570320
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    Cited by:

    1. Guoyi Zhang, 2014. "Improved R and s control charts for monitoring the process variance," Journal of Applied Statistics, Taylor & Francis Journals, vol. 41(6), pages 1260-1273, June.

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