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Monitoring Process Dispersion Without Subgrouping

Summary: [This abstract is based on the authors' abstract. A longer abstract is available on the journal's website.]

Several control charts are analyzed that are suitable for monitoring process dispersion when subgrouping is not possible or desirable. The average run length performances of these charts are also estimated and compared.

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  • Topics:
  • Keywords: Average run length (ARL),Exponentially weighted moving average control charts (EWMA),Cumulative sum control chart (CUSUM)
  • Author: Acosta-Mejia, Cesar A.; Pignatiello, Joseph J. Jr.
  • Journal: Journal of Quality Technology