Suga,

Perhaps something like this ...

library(pwr)
n <- 50:100
power <- pwr.2p.test(h=ES.h(0.4,0.2), n=n, sig.level=0.05,
alternative="greater")$power
plot(n, power)

Jean


On Mon, Jun 16, 2014 at 10:44 AM, Suganthie Jeyaganth <suganthie13@yahoo.ca>
wrote:

> Dear R mailing listers,
> I am try to find the different power calculation for
>
> p1=0.2 and p2=0.4 , with significant level=0.05  (one sided test)
>
> I would like to  have a graph   y -axis as a power and
>
> x-axis as a sample size .
>
> I run this command for different value of power. and get the n and power
>
> to draw a graph
>
> pwr.2p.test(h=ES.h(0.4,0.2), power = 0.87,
> sig.level=0.05,alternative="greater")
>
>
> Is there is any easy way i can do this in R.
> Thanks
>
>
> Suga
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>
>
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