Riaz, M.

English

In this study, a Shewhart-type control chart is proposed for the improved monitoring of process mean level (targeting both moderate and large shifts which is the major concern of Shewhart-type control charts) of a quality characteristic of interest Y. The proposed control chart, namely the M-r chart, is based on the regression estimator of mean using a single auxiliary variable X. Assuming bivariate normality of (Y, X), the design structure of M-r chart is developed for phase I quality control. The comparison of the proposed chart is made with some existing control charts used for the same purpose. Using power curves as a performance measure, better performance of the proposed M-r chart is observed for detecting the shifts in mean level of the characteristic of interest

International Migration, Integration and Social Cohesion online publications

Monitoring process mean level using auxiliary information

https://pure.uva.nl/ws/files/1055325/67526_298929.pdf

Monitoring process mean level using auxiliary information

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International Migration, Integration and Social Cohesion online publications