A study on the performances of the run sum X̄ chart under the gamma process
Kai Le Goh,
Lin Wei Teoh,
Lin Zhi Chong
et al.
Abstract:The run sum (RS) X̄ chart is known as a simple and powerful tool for monitoring the mean of a process. Most developments of the RS X̄ chart assume that the underlying process comes from a normal distribution. However, in practice, many processes tend to follow a non-normal distribution. These non-normal processes affect the performances of control charts under the design of normal distribution. In this paper, we present a detailed analysis on the performances of the RS X̄ chart when the underlying data come fr… Show more
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