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Home  >  Volume 47 (July 2018)

23. COMPARATIVE STUDY OF THE PERFORMANCE OF MEWMA AND HOTTELLING CONTROL CHART by Nura Muhammad, Mansur Idi, Ameer Hassan, Aminu S. M, Abdurrahman Abdul Hamid and Kabiru M. Volume 47 (July, 2018 Issue), pp183 – 186
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COMPARATIVE STUDY OF THE PERFORMANCE OF MEWMA AND HOTTELLING’S〖  T〗^2 CONTROL CHART

Nura Muhammad, Mansur Idi, Ameer Hassan, Aminu S. M, Abdurrahman Abdul Hamid and Kabiru M.

Department of Statistics, Kano State Polytechnic, Kano, Nigeria

Abstract

This research presents a comparative study of the performance of MEWMA, as well as Hotelling’s T^2  Control Charts. The objective of this research is to verify when Mewma and Hotelling’s T^2 Control Chart perform become the best, in terms of detecting small changes in the process average. Using the Data obtained from Bagco super sack plc, both two techniques were used to detect the out of control signal conditions.T^2 Found by each Chart was then compared. It was discovered that Mewma Control Chart practically out-performsHotelling’s T^2in terms of detection ability of small and moderate shifts. Forthese variation levels, that is where Hotelling’s T^2cannot detect a single shifts,Mewma was able to detect nine points’ out-of-control signals, based on these results then Mewma Control Chart was more efficient in detecting  small and moderate shifts  than Hotelling’s T^2control Chart.

Keywords: Statistical process control, Mewma Statistic, Hotelling’s

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