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st: R: sampsi and percentages


From   "Carlo Lazzaro" <carlo.lazzaro@tin.it>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: R: sampsi and percentages
Date   Tue, 30 Aug 2011 09:46:00 +0200

Dear Ricardo,
which theoretical issue in your research field does make you feel strange
about using -sampsi- in this instance?

Kindest Regards,
Carlo
-----Messaggio originale-----
Da: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Per conto di Ricardo Ovaldia
Inviato: lunedì 29 agosto 2011 20.41
A: statalist@hsphsun2.harvard.edu
Oggetto: st: sampsi and percentages

 
 
I need to compute sample size and power for a study comparing two group on a
measurement bounded by (0,1), (a measure of intensity).
I was thinking about using -sampsi- to power on the difference of means.
However, this seems strange to me, is there another way to power such
comparison?
 
Thank you,
Ricardo

Ricardo Ovaldia, MS
Statistician 
Oklahoma City, OK

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