The effect of parameter estimation on the performance of one-sided Shewhart control charts for zero-inflated processes

Athanasios C. Rakitzis and Philippe Castagliola

Communications in Statistics - Theory and Methods, 2016, vol. 45, issue 14, 4194-4214

Abstract: Zero-inflated probability models are used to model count data that have an excessive number of zeros. Shewhart-type control charts have been proposed for the monitoring of zero-inflated processes. Usually their performance is evaluated under the assumption of known process parameters. However, in practice, their values are rarely known and they have to be estimated from an in-control historical Phase I sample. In the present paper, we investigate the performance of Shewhart-type control charts for zero-inflated processes with estimated parameters and propose practical guidelines for the statistical design of the examined charts, when the size of the preliminary sample is predetermined.

Date: 2016
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DOI: 10.1080/03610926.2014.917188

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