[R] Power of tests

[Ulf Mehlig]

Hello R-Experts,

2 questions:

 does anybody have example functions for determining the power of,
 say, a t-test or a single factor anova with fixed or random factors?
 
 and: is there an implementation of Cochran's test for heterogeneity
 of variances (i.e., is there a frequency distribution of Cochran's
 C)?

Many thanks for your attention ...
Ulf

(please CC: me, I'm not on the list at the moment)

-- 
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Ulf Mehlig    <umehlig at zmt.uni-bremen.de>
              Center for Tropical Marine Ecology/ZMT, Bremen, Germany
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