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I asked this question:

Compare the variances of several groups

The Levene's method only test all groups. How can I identify the groups that have a different variances?

user1436187
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    Levene's test is based on ANOVA. Why not approach it in the same way as pairwise means comparisons in ANOVA? – Glen_b Feb 03 '14 at 15:19

1 Answers1

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Instead of using some magic black box tests, do it rigorously. You can find the answer in excelent article from Larry Bretthorst, "On The Difference In Means".

http://bayes.wustl.edu/glb/diff.pdf

Unlike what the title says, the paper is also about the difference and the magnitude of difference between stabdard deviations of two samples.

omidi
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