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Performance evaluation of moving average-based EWMA chart for exponentially distributed process

  • Saddam Akber Abbasi
  • , Muhammad Abid*
  • , Muhammad Riaz
  • , Hafiz Zafar Nazir
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The moving average (MA), exponentially weighted moving average (EWMA) and cumulative sum (CUSUM) control charts are popular control charts to detect small shifts quickly in process parameters. In this study, we evaluate the performance of the EWMA chart for monitoring exponentially distributed quality characteristics based on moving average statistics. The average run length and some other associated characteristics are used as performance measures of the chart. The concept of using the probability of detection for the performance assessment of this chart has been criticized in this study. A real-life application is also provided for practical consideration.

Original languageEnglish
Pages (from-to)365-372
Number of pages8
JournalJournal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an
Volume43
Issue number4
DOIs
StatePublished - 18 May 2020

Bibliographical note

Publisher Copyright:
© 2020, © 2020 The Chinese Institute of Engineers.

Keywords

  • EWMA chart
  • Monte Carlo simulation
  • exponential distribution
  • moving average
  • probability of detection
  • run length

ASJC Scopus subject areas

  • General Engineering

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