The Performance of DEWMA and EWMA for ZIB Model when Underlying Distribution is the Ratio of Two Poisson Means
Keywords:
Average Run Length, zero-inflated binomial, Markov Chain, double exponentially weighted moving averageAbstract
This research aims to present a double exponent weighted moving average (DEWMA) control chart for a Zero Inflated Binomial model under the ratio distribution of the two Poisson means (ZIBpoi) by the Markov Chain approach, this is also to compare the efficiency of DEWMA with EWMA procedure. The performance of DEWMA control chart gives an out-of-control signal quicker than EWMA control chart to small process shifts () for
shifts and quicker than all cases for
shifts.
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