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The double sampling and the EWMA charts based on the sample variances

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dc.contributor.authorMachado, Marcela A. G.
dc.contributor.authorCosta, Antonio F. B. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:28:33Z
dc.date.available2014-05-20T13:28:33Z
dc.date.issued2008-07-01
dc.description.abstractWe propose a new statistic to control the covariance matrix of bivariate processes. This new statistic is based on the sample variances of the two quality characteristics, in short VMAX statistic. The points plotted on the chart correspond to the maximum of the values of these two variances. The reasons to consider the VMAX statistic instead of the generalized variance vertical bar S vertical bar is its faster detection of process changes and its better diagnostic feature; that is, with the VMAX statistic it is easier to identify the out-of-control variable. We study the double sampling (DS) and the exponentially weighted moving average (EWMA) charts based on the VMAX statistic. (C) 2008 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, Prod Dept, São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Prod Dept, São Paulo, Brazil
dc.format.extent134-148
dc.identifierhttp://dx.doi.org/10.1016/j.ijpe.2008.01.001
dc.identifier.citationInternational Journal of Production Economics. Amsterdam: Elsevier B.V., v. 114, n. 1, p. 134-148, 2008.
dc.identifier.doi10.1016/j.ijpe.2008.01.001
dc.identifier.issn0925-5273
dc.identifier.urihttp://hdl.handle.net/11449/9511
dc.identifier.wosWOS:000257818300012
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofInternational Journal of Production Economics
dc.relation.ispartofjcr4.407
dc.relation.ispartofsjr2,401
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectcontrol chartsen
dc.subjectcovariance matrixen
dc.subjectdouble samplingen
dc.subjectEWMAen
dc.subjectgeneralized varianceen
dc.titleThe double sampling and the EWMA charts based on the sample variancesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
unesp.author.lattes6100382011052492[2]
unesp.author.orcid0000-0003-2133-1098[2]

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