Journal of the Korean Statistical Society

The Korean Statistical Society (한국통계학회)
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Design of the Variable Sampling Rates X-chart with Average Time to Signal Adjusted by the Sampling Cost

  • Park, Chang-Soon (Department of Applied Statistics, Chung-Ang University, Seoul, 156-756) ;
  • Song, Moon-Sup (Department of Computer Science and Statistics, Seoul National University, Seoul, 151-742)
  • Published : 1997.06.01
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Abstract

The variable sampling rates scheme is proposed by taking random sample size and sampling interval during the process. The performance of the scheme is measured in terms of the average time to signal adjusted by teh sampling cost when the process is out of control. This measurement evaluates the effectiveness of the scheme in terms of the cost incurred due to nonconformation as well as sampling. The variable sampling rates scheme is shown to be effective especially for small and moderate shifts of the mean when compared to the standard scheme.

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References

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