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Enhancing the Performance of Exponentially Weighted Moving Average Charts: Discussion
Author(s) -
Abbas Nasir,
Riaz Muhammad,
Does Ronald J. M. M.
Publication year - 2015
Publication title -
quality and reliability engineering international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 62
eISSN - 1099-1638
pISSN - 0748-8017
DOI - 10.1002/qre.1615
Subject(s) - ewma chart , control chart , reliability (semiconductor) , moving average , chart , exponential growth , statistics , mathematics , computer science , algorithm , process (computing) , mathematical analysis , power (physics) , physics , quantum mechanics , operating system
Abbas et al . (Abbas N, Riaz M, Does RJMM. Enhancing the performance of EWMA charts. Quality and Reliability Engineering International 2011; 27(6):821–833) proposed the use of signaling schemes with exponentially weighted moving average charts (named as 2/2 and modified − 2/3 schemes) for their improved design structures. A two‐sided control structure of these schemes is given in the paper. The computational results in some of the tables of that paper for modified − 2/3 are mistakenly given for the one‐sided control structure. The corrected two‐sided results are provided here. It is noticed that the superiority of the proposed scheme over the classical exponentially weighted moving average chart remains but is less pronounced. Copyright © 2014 John Wiley & Sons, Ltd.