VSSI (X)over-bar charts with sampling at fixed times

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dc.contributor.authorCosta, AFB
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:28:28Z
dc.date.available2014-05-20T15:28:28Z
dc.date.issued1998-01-01
dc.description.abstractA standard (X) over bar chart for controlling the process mean takes samples of size no at specified, equally-spaced, fixed-time points. This article proposes a modification of the standard (X) over bar chart that allows one to take additional samples, bigger than no, between these fixed times. The additional samples are taken from the process when there is evidence that the process mean moved from target. Following the notation proposed by Reynolds (1996a) and Costs (1997) we shortly call the proposed (X) over bar chart as VSSIFT (X) over bar chart: where VSSIFT means variable sample size and sampling intervals with fixed times. The (X) over bar chart with the VSSIFT feature is easier to be administered than a standard VSSI (X) over bar chart that is not constrained to sample at the specified fixed times. The performances of the charts in detecting process mean shifts are comparable.en
dc.description.affiliationUNESP, FEG, BR-12500000 Guaratingueta, SP, Brazil
dc.description.affiliationUnespUNESP, FEG, BR-12500000 Guaratingueta, SP, Brazil
dc.format.extent2853-2869
dc.identifierhttp://dx.doi.org/10.1080/03610929808832259
dc.identifier.citationCommunications In Statistics-theory and Methods. New York: Marcel Dekker Inc., v. 27, n. 11, p. 2853-2869, 1998.
dc.identifier.doi10.1080/03610929808832259
dc.identifier.issn0361-0926
dc.identifier.urihttp://hdl.handle.net/11449/38273
dc.identifier.wosWOS:000076658500014
dc.language.isoeng
dc.publisherMarcel Dekker Inc
dc.relation.ispartofCommunications in Statistics: Theory and Methods
dc.relation.ispartofjcr0.353
dc.relation.ispartofsjr0,352
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectaverage time to signalpt
dc.subject(X)over-bar control chartspt
dc.subjectstatistical process controlpt
dc.subjectvariable sample sizept
dc.subjectvariable sampling intervalpt
dc.titleVSSI (X)over-bar charts with sampling at fixed timesen
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dcterms.rightsHolderMarcel Dekker Inc

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