[R] power of a multiway ANOVA

[Rolf Turner]

On 6/06/2008, at 1:08 AM, biologeeks wrote:

> dear all,
>
> in the package pwr , there is the fonction power.anova.test which  
> permit to
> obtain the power for a one-way ANOVA...but I'm looking for a way to  
> compute
> the power of a multiway ANOVA.( find the 1-beta). Is it possible?
>
> do you have some ideas ?

The cumulative F distribution function pf in R allows for a non- 
centrality
parameter, so you can calculate the power of any F-test, against any  
properly
specified alternative hypothesis, if you know what you are doing.   
(And if you
don't know what you're doing, don't do it.)

		cheers,

			Rolf Turner

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