Re: [R] observed power

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Subject: Re: [R] observed power
From: Peter Dalgaard BSA (p.dalgaard@biostat.ku.dk)
Date: Sat 27 Jan 2001 - 01:29:03 EST 

Message-ID: <x2k87i49j4.fsf@blueberry.kubism.ku.dk>

"Mark M. Span" <span@psy.uva.nl> writes:

> Is there a way to obtain the observed power of an aov()?
>
> I perform an aov with one between and one within factor, and would like to
> know the observed power of the tests, both for the main effect and the
> interaction. I found the package 'hpower', but sense there is a more
> convenient possibility. Is there?
>
> thanks
>
> Mark M. Span

What's "observed power"? If you mean the item that SPSS has by that
name, I think you first have to convince us that that is a sensible
thing to calculate... 

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907
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