CUSUM Control Charts for the Monitoring of Zero-inflated Binomial Processes

CUSUM Control Charts for the Monitoring of Zero-inflated Binomial Processes

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Article ID: iaor2016697
Volume: 32
Issue: 2
Start Page Number: 465
End Page Number: 483
Publication Date: Mar 2016
Journal: Quality and Reliability Engineering International
Authors: , ,
Keywords: simulation, statistics: distributions
Abstract:

Zero‐inflated probability models are used to model count data that have an excessive number of zeros. These models are mostly useful in modeling high‐yield or health‐related processes. The zero‐inflated binomial distribution is an extension of the ordinary binomial distribution that takes into account the excess of zeros. In this paper, one‐sided cumulative sum (CUSUM)‐type control charts are proposed for monitoring increases or decreases in the parameter p of a zero‐inflated binomial process. The results of an extensive numerical study concerning the statistical design of the proposed schemes as well as their practical implementation are provided.

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