Robust point location estimators for the EWMA control chart

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

7 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)29-38
Journal / PublicationQuality Technology and Quantitative Management
Volume13
Issue number1
Publication statusPublished - Jan 2016
Externally publishedYes

Abstract

In practice, the EWMA control chart for process monitoring is based on parameters estimated from a retrospective data set representing the process characteristic under study. This data set may contain contaminated observations, which in turn can affect the estimates and hence the control chart's performance. We study the problem of estimating the location when the data set may or may not contain contaminated observations. We compare six point estimators proposed in the SPC literature. The quality of the estimators is evaluated in terms of estimation accuracy. Moreover, we study the impact of the estimators on the performance of the EWMA control chart based on the different location estimators.

Research Area(s)

  • Contaminations, EWMA control chart, statistical process control, ESTIMATED PARAMETERS

Citation Format(s)

Robust point location estimators for the EWMA control chart. / Zwetsloot, Inez M.; Schoonhoven, Marit; Does, Ronald J. M. M.

In: Quality Technology and Quantitative Management, Vol. 13, No. 1, 01.2016, p. 29-38.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review