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The Difference Test Statistic for Two Suppliers with Linear Profiles
Author(s) -
Wang FuKwun
Publication year - 2016
Publication title -
quality and reliability engineering international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 62
eISSN - 1099-1638
pISSN - 0748-8017
DOI - 10.1002/qre.1726
Subject(s) - statistic , test statistic , statistics , index (typography) , mathematics , f test , sampling (signal processing) , test (biology) , distribution (mathematics) , selection (genetic algorithm) , computer science , statistical hypothesis testing , operations research , artificial intelligence , mathematical analysis , filter (signal processing) , world wide web , computer vision , paleontology , biology
Comparing two suppliers for linear profiles is a very important task for supplier management. The difference test statistic based on the process‐yield index is proposed to tackle the better process selection for linear profiles. A simple form of the sampling distribution of the process‐yield index is derived by a simulation study. Therefore, the asymptotic normal distribution of the difference test statistic is established. The results provide useful information to practitioners. An example from the leather industry is presented to illustrate the applicability of the proposed method. Copyright © 2014 John Wiley & Sons, Ltd.