A Study of Methods for Comparing Several Variances
- 1 June 1972
- journal article
- research article
- Published by JSTOR in Journal of the American Statistical Association
- Vol. 67 (338) , 342
- https://doi.org/10.2307/2284380
Abstract
A variety of statistics are available for testing the homoscedasticity of several populations. In this article a number of these statistics are compared for power and for stability of error rates. Bartlett's statistic is seen to be very powerful in all the experimental cases considered here. Under a condition of non-normality the only statistic to maintain stable error rates is the one using the logarithmic transformation with the analysis of variance.Keywords
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