Preliminary results concerning the VSS X̄ chart with unknow in-control parameters

Abstract

The VSS X̄ chart is known to perform better than the traditional X̄ control chart in detecting small to moderate mean shifts in the process. Many researchers have used this chart in order to detect a process mean shift under the assumption of known parameters. However, in practice, the process parameters are rarely known and are usually estimated from an in… (More)

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