[R] Unequal sample sizes when calculating power

Marc Schwartz (via MN) mschwartz at mn.rr.com
Wed Jan 25 17:38:16 CET 2006

On Wed, 2006-01-25 at 09:50 -0500, Farrel Buchinsky wrote:
> Power calculations two sample test for proportions is very useful. Is there
> a way however, to get away from the two samples being of the same size. What
> would happen if one had n=15 in the one sample and n=45 in the other sample.

See ?bpower and ?bpower.sim (along with the other functions on the same
help page) in Frank Harrell's 'Hmisc' package on CRAN.


Marc Schwartz
P.S. Go Steelers!  :-)

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