International Journal of Human Diversity and Evolution
Coverage: 1923-1941 (Vols. I-XIX) & 1962-2023 (Vols. 1-61)
ISSN 0323-1119 (Print)
ISSN 2570-9127 (Online)
Journal Impact Factor 0.2
News: Volume 62 Issue 2 is in progress.

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'Ipiña S, Durand AI, 2001: Sexual Dimorphism, MI Index, Student's t and Snedecor's F. Anthropologie (Brno) 39, 2-3: 187-189'.
An index of sexual dimorphism for populations distributed as mixture models of two normal components has been proposed by the authors. Our proposal is a function of the five parameters characterizing the mixture model, that is, two mathematical expectations, two variances and one mixing proportion. That our index depends on a proportion is not always perceived correctly, so in this article we show that sample sizes, or proportions as lineal functions of sample sizes, influence on such common sample statistics as Student's t or Snedecor's F and the decisions that are made through them.
MI Index - Proportions - Sample Statistics

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