A Comparison of Permutation Hotelling's T 2 Test and Log-Ratio Test for Analyzing Compositional Data |
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| Authors: | Deo Kumar Srivastava James M Boyett Carl W Jackson Xin Tong Shesh N Rai |
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| Institution: | 1. St. Jude Children's Research Hospital , Memphis, Tennessee, USA kumar.srivastava@stjude.org;3. St. Jude Children's Research Hospital , Memphis, Tennessee, USA |
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| Abstract: | An adding-back model is constructed for studying multiple outliers and influential observations. A logarithmic functional form for some influence measures having a better justification for plotting purposes is suggested. Two graphical methods with contours of constant measure values are proposed. They provide valuable information about the interrelationship of multiple influential observations and influence measures. |
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| Keywords: | Compositional data Log-ratio test Permutation test |
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