Testing for multiple species in fossil samples: An evaluation and comparison of tests for equal relative variation
Article first published online: 23 MAR 1999
Copyright © 1999 Wiley-Liss, Inc.
American Journal of Physical Anthropology
Volume 108, Issue 4, pages 507–529, April 1999
How to Cite
Donnelly, S. M. and Kramer, A. (1999), Testing for multiple species in fossil samples: An evaluation and comparison of tests for equal relative variation. Am. J. Phys. Anthropol., 108: 507–529. doi: 10.1002/(SICI)1096-8644(199904)108:4<507::AID-AJPA8>3.0.CO;2-0
- Issue published online: 23 MAR 1999
- Article first published online: 23 MAR 1999
- Manuscript Accepted: 11 NOV 1998
- Manuscript Received: 19 FEB 1998
- species recognition;
- Levene's test;
- weighted scores tests;
- Fligner-Killeen test
Tests for equal relative variation are valuable and frequently used tools for evaluating hypotheses about taxonomic heterogeneity in fossil hominids. In this study, Monte Carlo methods and simulated data are used to evaluate and compare 11 tests for equal relative variation. The tests evaluated include CV-based parametric bootstrap tests, modifications of Levene's test, and modified weighted scores tests. The results of these simulations show that a modified version of the weighted scores test developed by Fligner and Killeen ( J. Am. Stat. Assoc. 71:210–213) is the only test that maintains an acceptable balance of type I and type II errors, even under conditions where all other tests have extraordinarily high type I error rates or little power. Am J Phys Anthropol 108:507–529, 1999. © 1999 Wiley-Liss, Inc.