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지역적이고 비정규분포를 갖는 데이터의 공정관리를 위한 지역기반 T<sup>2</sup>관리도
김정훈,김성범,Kim, Jeong-Hun,Kim, Seoung-Bum 한국품질경영학회 2012 품질경영학회지 Vol.40 No.3
Purpose: A Control chart is one of the important statistical process control tools that can improve processes by reducing variability and defects. Methods: In the present study, we propose the local $T^2$ multivariate control chart that can efficiently detect abnormal observations by considering the local pattern of the in-control observations. Results: A simulation study has been conducted to examine the property of the proposed control chart and compare it with existing multivariate control charts. Conclusion: The results demonstrate the usefulness and effectiveness of the proposed control chart.