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Multivariate Shewhart control charts with variable sampling intervals  

Cho, Gyo-Young (Department of Statistics, Kyungpook National University)
Publication Information
Journal of the Korean Data and Information Science Society / v.21, no.6, 2010 , pp. 999-1008 More about this Journal
Abstract
The objective of this paper is to develop variable sampling interval multivariate control charts that can offer significant performance improvements compared to standard fixed sampling rate multivariate control charts. Most research on multivariate control charts has concentrated on the problem of monitoring the process mean, but here we consider the problem of simultaneously monitoring both the mean and variability of the process.
Keywords
Average time to signal; multivariate control chart; statistical process control; steady state ATS; variable sampling interval;
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