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Comparison of t ‐tests for differences in sexual dimorphism between populations
Author(s) -
Greene David Lee
Publication year - 1989
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.1330790113
Subject(s) - sexual dimorphism , metric (unit) , statistics , significance testing , statistical hypothesis testing , linear regression , mathematics , biology , zoology , operations management , economics
A t ‐test that can be used for evaluating the significance of differences in metric sexual dimorphism between populations is derived directly from mathematical considerations of the differences between distributions. It is compared with the t ‐test derived by Relethford and Hodges (1985), which was based upon linear regression with sex as a dummy variable. Both are determined to be mathematically equivalent, though the one derived here is more similar in form to traditional t ‐tests of differences and therefore may be simpler to employ. Both tests require only summary statistics for comparisons between populations and comparisons between generations within populations.