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VARIABILITY OF MAMMALS

VARIABILITY OF MAMMALS BOOK REVIEWS SYDNEY ANDERSON The American Museum of Natural History, New York, New York Received June 4, 1975 Variability here means the differences among in different aspects. A list of about 150 char­ individuals of comparable age and sex in a single acters appropriate for study in most mammals is panmictic population. Where there is no significant outlined, 35 to 45 is regarded as a useful number difference between the sexes or certain age groups of traits. Few existing reports deal with more in the measurement of a dimension the sexes or than 10 to 15. The coefficient of variation (C. V.) age groups may be combined in analysis. The is favored over other measures outlined, the t principal measure of variability used is the co­ statistic is sometimes useful. The author expresses efficient of variability. scepticism of more elaborate mathematical manip­ Biologists (as well as mathematicians and ulations and does not thereafter work with gamblers) have long dealt with variability. Plants multivariate methods or give much consideration and animals, including mammals, are indeed vari­ to correlation or covariance of traits. Increasing able. Although biologists such as taxonomists, sample sizes above 25 does not much increase geneticists, and anatomists, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Evolution Oxford University Press

VARIABILITY OF MAMMALS

Anderson, Sydney
Evolution , Volume 30 (1) – Mar 1, 1976
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Publisher
Oxford University Press
Copyright
© Society for the Study of Evolution
ISSN
0014-3820
eISSN
1558-5646
DOI
10.1111/j.1558-5646.1976.tb00898.x
Publisher site
See Article on Publisher Site

Abstract

BOOK REVIEWS SYDNEY ANDERSON The American Museum of Natural History, New York, New York Received June 4, 1975 Variability here means the differences among in different aspects. A list of about 150 char­ individuals of comparable age and sex in a single acters appropriate for study in most mammals is panmictic population. Where there is no significant outlined, 35 to 45 is regarded as a useful number difference between the sexes or certain age groups of traits. Few existing reports deal with more in the measurement of a dimension the sexes or than 10 to 15. The coefficient of variation (C. V.) age groups may be combined in analysis. The is favored over other measures outlined, the t principal measure of variability used is the co­ statistic is sometimes useful. The author expresses efficient of variability. scepticism of more elaborate mathematical manip­ Biologists (as well as mathematicians and ulations and does not thereafter work with gamblers) have long dealt with variability. Plants multivariate methods or give much consideration and animals, including mammals, are indeed vari­ to correlation or covariance of traits. Increasing able. Although biologists such as taxonomists, sample sizes above 25 does not much increase geneticists, and anatomists,

Journal

Evolution – Oxford University Press

Published: Mar 1, 1976

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