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- Title
The SPRT control chart for process dispersion.
- Authors
Godase, Dadasaheb G.; Mahadik, Shashibhushan B.
- Abstract
This paper investigates the statistical performance of a sequential probability ratio test control chart for monitoring the dispersion of a normally distributed process. The expressions for statistical performance measures of the chart are derived using a Markov chain approach. It is shown through numerical comparisons that the overall statistical performance of this chart is superior to that of the existing competitor charts for dispersion. An example illustrating an application of the chart in practice is provided.
- Subjects
CUSUM technique; QUALITY control charts; MARKOV processes; STATISTICAL process control; DISTRIBUTED computing; DISPERSION (Chemistry)
- Publication
Quality & Reliability Engineering International, 2019, Vol 35, Issue 6, p1878
- ISSN
0748-8017
- Publication type
Article
- DOI
10.1002/qre.2481