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A Control Chart Based on Ranks
Journal article   Peer reviewed

A Control Chart Based on Ranks

Peter Hackl and Johannes Ledolter
Journal of quality technology, Vol.23(2), pp.117-124
04/01/1991
DOI: 10.1080/00224065.1991.11979302

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Abstract

A control chart technique that considers exponentially weighted moving averages (EWMA) of the ranks of the observations is proposed. This nonparametric technique is outlier-resistant and performs well if one is concerned about sudden shifts in the process mean. The procedure is illustrated on a data set taken from the literature.
Exponentially Weighted Moving Average Nonparametric Procedure Ranks Robustness Run Length Shewhart Chart

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