Title
Monitoring the Coefficient of Variation Using a Variable Sampling Interval Control Chart.
Abstract
The coefficient of variation (CV) is a quality characteristic that has several applications in applied statistics and is receiving increasing attention in quality control. Few papers have proposed control charts that monitor this normalized measure of dispersion. In this paper, an adaptive Shewhart control chart implementing a variable sampling interval (VSI) strategy is proposed to monitor the CV. Tables are provided for the statistical properties of the VSI CV chart, and a comparison is performed with a Fixed Sampling Rate Shewhart chart for the CV. An example illustrates the use of these charts on real data gathered from a casting process. Copyright (c) 2012 John Wiley & Sons, Ltd.
Year
DOI
Venue
2013
10.1002/qre.1465
QUALITY AND RELIABILITY ENGINEERING INTERNATIONAL
Keywords
Field
DocType
coefficient of variation,variable sampling interval,average time to signal
Econometrics,Coefficient of variation,Computer science,Sampling (signal processing),X-bar chart,u-chart,ar x and R chart,Control chart,Chart,Statistics,ar x and s chart
Journal
Volume
Issue
ISSN
29
8
0748-8017
Citations 
PageRank 
References 
4
0.59
1
Authors
5
Name
Order
Citations
PageRank
Philippe Castagliola152961.65
Ali Achouri240.59
Hassen Taleb3293.74
Giovanni Celano49212.38
Stelios Psarakis518018.46