An attribute control chart for monitoring the variability of a process

Recently, Wu et al. (2009) proposed the use of an npx chart to monitor a process mean by attribute inspection as an alternative to the use of an X¯ chart. Motivated by the simplicity of this control chart and its good performance, the possibility of using a similar chart, an npS2 control chart, to m...

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Bibliographic Details
Published in:	International journal of production economics Vol. 145; no. 1; pp. 263 - 267
Main Authors:	Lee Ho, Linda, Quinino, Roberto Costa
Format:	Journal Article
Language:	English
Published:	Amsterdam Elsevier B.V 01-09-2013 Elsevier Sequoia S.A
Subjects:	Attribute inspection Comparative analysis Control charts Discriminating limits Economics Inspection Monitoring Monitors npS2 Control chart npx Control chart Numerical analysis Operations research Process controls R control chart S2 control chart Studies Discriminating limits Attribute inspection S2 control chart npx Control chart npS2 Control chart R control chart
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Summary:	Recently, Wu et al. (2009) proposed the use of an npx chart to monitor a process mean by attribute inspection as an alternative to the use of an X¯ chart. Motivated by the simplicity of this control chart and its good performance, the possibility of using a similar chart, an npS2 control chart, to monitor the variability of a process was explored, and the results are described in this paper. A comparison of the proposed npS2 control chart with the S2 and R control charts is presented, and a numerical example is provided to demonstrate the use of the npS2 control chart.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0925-5273 1873-7579
DOI:	10.1016/j.ijpe.2013.04.046