Estimation of the Change Point in VSS X Control Charts

Title & Authors
Estimation of the Change Point in VSS X Control Charts
Lee, Jaeheon; Park, Changsoon;

Abstract
Knowing the time of the process change could lead to quicker identification of the responsible special cause and less process down time, and it could help to reduce the probability of incorrectly identifying the special cause. In this paper, we propose a maximum likelihood estimator of the process change point when a Shewhart $\small{\bar{X}}$ chart with variable sample size (VSS) scheme signals a change in the process mean. Also we build a confidence interval for the process change point by using the likelihood function.
Keywords
Change point;Maximum likelihood estimator;$\small{\bar{X}}$ control chart;VSS scheme;
Language
Korean
Cited by
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