VSSI X̄ charts with sampling at fixed times

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorCosta, Antonio F. B.
dc.date2014-05-27T11:19:41Z
dc.date2016-10-25T18:15:31Z
dc.date2014-05-27T11:19:41Z
dc.date2016-10-25T18:15:31Z
dc.date1998-12-01
dc.date.accessioned2017-04-06T00:53:29Z
dc.date.available2017-04-06T00:53:29Z
dc.identifierCommunications in Statistics - Theory and Methods, v. 27, n. 11, p. 2853-2869, 1998.
dc.identifier0361-0926
dc.identifierhttp://hdl.handle.net/11449/65665
dc.identifierhttp://acervodigital.unesp.br/handle/11449/65665
dc.identifier2-s2.0-0347561892
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/887363
dc.descriptionA standard X̄ chart for controlling the process mean takes samples of size n0 at specified, equally-spaced, fixed-time points. This article proposes a modification of the standard X chart that allows one to take additional samples, bigger than n0, 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 Costa (1997) we shortly call the proposed X chart as VSSIFT X chart where VSSIFT means variable sample size and sampling intervals with fixed times. The X chart with the VSSIFT feature is easier to be administered than a standard VSSI X chart that is not constrained to sample at the specified fixed times. The performances of the charts in detecting process mean shifts are comparable. Copyright © 1998 by Marcel Dekker, Inc.
dc.languageeng
dc.relationCommunications in Statistics: Theory and Methods
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAverage time to signal
dc.subjectStatistical process control
dc.subjectVariable sample size
dc.subjectVariable sampling interval
dc.subjectX̄ control charts
dc.titleVSSI X̄ charts with sampling at fixed times
dc.typeOtro


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