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Journal of Korean Society for Quality Management > Volume 24(3); 1996 > Article
Journal of Korean Society for Quality Management 1996;24(3): 50-.
다수 이상치 인식(認識)을 위한 외향성 검정 절차
염준근1, 김종우2
1동국대학교 통계학과
2제주교육대학교 수학교육학과
Outward Testing Procedure for the Identification of Multiple Outliers
Joon-Keun Yum1, Jong-Woo Kim2
1Dept. of Statistics, Dongguk University
2Dept. of Mathematics Education, Cheju National University of Education
ABSTRACT
This article is concerned with procedures for detecting multiple y outliers in linear regression. The outward-testing procedure, which is controled by the initial subset and the minimum residuals, is suggested by two phases. The performance of this procedure is compared with others by Monte Carlo techniques and found to be superior. The procedure, however, fails in detecting y outliers that are on high-leverage cases in Phase 1. Thus, we proposed ELMS algorithm for a set of suspect observations, in Phase 1. In Phase 2, the proposed testing is conducted using the studentized residuals to see which of the suspect cases are outliers. Several examples are analyzed.
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