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Re: st: Fligner-Killeen


From   Steven Samuels <[email protected]>
To   [email protected]
Subject   Re: st: Fligner-Killeen
Date   Tue, 16 Jan 2007 10:02:16 -0500

Nick's suggestion is the Brown-Forsythe modification of Levene's test for equality of variance.
Steve

Brown, M.B. and Forsythe, A.B. (1974), "Robust Tests for Equality of Variances," Journal of the American Statistical Association, 69, 364 -367.

Levene, H. (1960), "Robust Tests for the Equality of Variance," in Contributions to Probability and Statistics, ed. I. Olkin, Palo Alto, CA: Stanford University Press, 278 -292.



On Jan 16, 2007, at 9:49 AM, n j cox wrote:


More positively, a recipe for testing differences in
scale is this:

1. Compute absolute deviations =
| values - favourite group summary (e.g. median)|.

2. Apply favourite test of location to absolute deviations.



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