PROCESS CAPABILITY INDEX-BASED CONTROL CHART FOR VARIABLES

Authors

  • Olatunde Adebayo Adeoti University of South Africa Department of Statistics and Bowen University, Iwo, Nigeria Department of Mathematics and Statistics
  • John Olutunji Olaomi University of South Africa

DOI:

https://doi.org/10.7166/28-2-1353

Keywords:

Downton's statistics, Process capability index, Control chart

Abstract

This paper proposes a process capability index-based control chart for variables using the Downton estimator with a specified Cp value. The proposed chart is able to address the issue of control and capability simultaneously. We also provide a control chart constant to construct the process capability index-based control chart. A numerical example is presented to demonstrate the application of the proposed chart, and the effect of non-normality is discussed. The result shows that the proposed control chart performs better in monitoring and assessing processes, and eliminates the usual two-stage procedure reflected in the literature.

Author Biographies

Olatunde Adebayo Adeoti, University of South Africa Department of Statistics and Bowen University, Iwo, Nigeria Department of Mathematics and Statistics

Department of Statistics

John Olutunji Olaomi, University of South Africa

Department of Statistics

Downloads

Published

2017-09-04

How to Cite

Adeoti, O. A., & Olaomi, J. O. (2017). PROCESS CAPABILITY INDEX-BASED CONTROL CHART FOR VARIABLES. The South African Journal of Industrial Engineering, 28(2), 28–36. https://doi.org/10.7166/28-2-1353

Issue

Vol. 28 No. 2 (2017)

Section

General Articles

License

Authors who publish in the Journal agree to the following terms:
  1. Authors retain copyright and grant the Journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the Journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this Journal.