1 A Statistically adaptive sampling policy to the Hotelling's T2 Control Chart: Markov Chain Approach

This paper proposes an alternative sampling scheme to the Hotelling’s T2 control chart with variable parameters (VP T2). Indeed, the sampling interval h, the sample size n and the control limit k vary between minimum and maximum values while the warning line is kept fixed over time. The proposed method uses only one measurement scale and therefore overcomes the usual difficulties of using two scales. Finally, we show the merits of the proposed method as a good option for its ease of application and its quick responses to small and moderate shifts in a multivariate process