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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
business, management and accounting
Monitoring the coefficient of variation using control charts with run rules
Quality Technology and Quantitative Management, Volume 10, No. 1, Year 2013
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Description
Monitoring the coefficient of variation (CV) is a successful approach to Statistical Process Control when the process mean and standard deviation are not constant. In recent years the CV has been investigated by many researchers as the monitored statistic for several control charts. Viewed under this perspective, this paper presents a new efficient method to monitor the CV by means of Run Rules (RR) type charts. Tables are provided to show the statistical run length properties of Shewhart-γ, RR 2,3-γ RR 3,4-γ and RR 4,5-γ control charts for several combinations of in control CV values γ 0 , sample size n and shift size T . Indeed, comparative studies have been performed to find the best control chart for each combination. An example illustrates the use of these charts on real data gathered from a metal sintering process. © ICAQM 2013.
Authors & Co-Authors
Castagliola, Philippe C.
France, Nantes
Laboratoire Des Sciences du Numérique de Nantes
Achouri, Ali
Tunisia, Le Bardo
Institut Supérieur de Gestion de Tunis
Taleb, Hassen
Tunisia, Gafsa
Université de Gafsa
Celano, Giovanni
Italy, Catania
Università Degli Studi Di Catania
Psarakis, Stelios
Greece, Athens
Athens University of Economics and Business
Statistics
Citations: 89
Authors: 5
Affiliations: 5
Identifiers
Doi:
10.1080/16843703.2013.11673309
ISSN:
16843703