An enhanced approach for the progressive mean control charts: A discussion and comparative analysis. (11th August 2020)

• Record Type: Journal Article
• Authors: Riaz, Muhammad; Abid, Muhammad; Abbas, Zameer; Nazir, Hafiz Zafar
• Is Part Of: Quality and reliability engineering international. Volume 37:Number 1(2021)
• Page Start: 1
• Page End: 9
• Publication Date: 2020-08-11
• Subjects: average run length -- control chart -- corrected variance -- double progressive mean -- process mean; Reliability (Engineering) -- Periodicals; Quality control -- Periodicals; High technology -- Periodicals; 620.00452
• DOI: 10.1002/qre.2733
• Languages: English
• ISSNs: 0748-8017

Abstract

Abstract: Recently, a new double progressive mean (DPM) control chart has been proposed in the literature of statistical process control. In the said proposal, an important term is missing in the variance expression of the DPM statistic that affects the detection ability of the proposed chart. In this study, we have derived and provided the correct version of the said variance along with its corresponding control limits. The run length profiles of the DPM chart are investigated, and the results are updated for the new version of the limits. Moreover, a sensitivity analysis between DPM and progressive mean charts based on the different choices of the design parameter is also included in this study. It is revealed that the revised version offers even more efficient outcomes than the previous ones. In addition, a real dataset application is also presented for practical considerations of the refined version.