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A comparison of alternative methods to the shewhart-type control chart

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dc.contributor.authorHall, Deborah A.en
dc.contributor.committeechairNachlas, Joel A.en
dc.contributor.committeememberKoelling, C. Patricken
dc.contributor.committeememberReynolds, Marion R. Jr.en
dc.contributor.departmentIndustrial Engineering and Operations Researchen
dc.date.accessioned2014-03-14T21:45:09Zen
dc.date.adate2012-09-08en
dc.date.available2014-03-14T21:45:09Zen
dc.date.issued1989-01-05en
dc.date.rdate2012-09-08en
dc.date.sdate2012-09-08en
dc.description.abstractA control chart that simultaneously tracks the mean and variance of a normally distributed variable with no compensation effect is defined in this work. This joint control chart is compared to five other charts: an Χ chart, an s² chart, a Reynolds and Ghosh chart, a Repko process capability plot, and a t-statistic chart. The criterion for comparison is the probability of a Type II sampling error. Several out-of-control cases are examined. In the case of Repko, an equation is defined to compute the Type II error probability. The results indicate that the Reynolds and Ghosh statistic is powerful for cases when the variance shifts out of control. The Χ chart is powerful when the mean shifts with moderate changes in the variance. The joint chart is powerful for moderate changes in the mean and variance.en
dc.description.degreeMaster of Scienceen
dc.format.extentvii, 99 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-09082012-040134en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09082012-040134/en
dc.identifier.urihttp://hdl.handle.net/10919/44642en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1989.H343.pdfen
dc.relation.isformatofOCLC# 19830973en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1989.H343en
dc.subject.lcshQuality control -- Charts, diagrams, etcen
dc.titleA comparison of alternative methods to the shewhart-type control charten
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineIndustrial Engineering and Operations Researchen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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