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Title: Schemes for joint monitoring of process mean and variance
Keywords: Joint monitoring, Average run length
Issue Date: 4-Sep-2005
Citation: ATHAMBAWA MOHAMED RAZMY (2005-09-04). Schemes for joint monitoring of process mean and variance. ScholarBank@NUS Repository.
Abstract: In quality control engineering, the importance of jointly monitoring the process mean and variance was first realized in 1997 and subsequently a few combined monitoring schemes were proposed. In this thesis existing joint monitoring schemes were explored and three new joint monitoring schemes were derived. The design procedures of these new schemes were explained by applying these charting schemes to some real and simulated data sets. These schemes were compared with various existing joint monitoring schemes based on their average run length profiles. Performances of these new schemes are comparable with the existing schemes and some times perform even better than the existing schemes. A big advantage of these schemes is that the chart parameters are independent of the sample size which gives more freedom to the quality engineers in selecting sample size.
Appears in Collections:Master's Theses (Open)

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