Anne G. Ryan, William H. Woodall
Abstract
The ability of cumulative sum control (CUSUM) and exponentially weighted moving average (EWMA) control charts to detect increases in the Poisson rate is evaluated by calculating the steady-state average run length performance for the charts. Results ind..
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The ability of cumulative sum control (CUSUM) and exponentially weighted moving average (EWMA) control charts to detect increases in the Poisson rate is evaluated by calculating the steady-state average run length performance for the charts. Results ind..
Key concepts: CUSUM, EWMA chart, Control chart, Count data, Poisson distribution, Statistics, Sample size determination, Poisson regression