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PERMUTATION TESTS AND OUTGROUPS
Author(s) -
Trueman John W.H.
Publication year - 1996
Publication title -
cladistics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.323
H-Index - 92
eISSN - 1096-0031
pISSN - 0748-3007
DOI - 10.1111/j.1096-0031.1996.tb00012.x
Subject(s) - permutation (music) , outgroup , ingroups and outgroups , null hypothesis , mathematics , combinatorics
— Commonly used permutation tail probability (PTP) and topology dependent permutation tail probability (T‐PTP) tests incorporate an inappropriate treatment of designated outgroup taxa, and for that reason are biased either for (PTP) or for or against (T‐PTP) rejection of the null hypothesis. A modified test is proposed, in which this source of bias is eliminated.