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On the Performance of EWMA Chart in the Presence of Two-Component Measurement Error
  • Open Access

On the Performance of EWMA Chart in the Presence of Two-Component Measurement Error

Publication:
Quality Engineering
Date:
July 2010
Issue:
Volume 22 Issue 3
Pages:
pp. 199-213
Author(s):
Abbasi, Saddam Akber
Organization(s):
Department of Statistics, The University of Auckland, Auckland, New Zealand

Abstract

[This abstract is based on the author’s abstract.]Studies have shown that exponentially weighted moving average (EWMA) control charts are superior to Shewhart charts for quick detection of small process shifts. This study examines the performance of the EWMA control chart in the presence of two-component measurement error encountered in analytical chemistry and environmental settings. It is possible to reduce the effect of measurement error by taking multiple measurements at each sample point.

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