On Nov 3, 2011, at 3:47 AM, David A. wrote:
>
> Hi,
>
> I am trying to estimate the sample size needed for the comparison of two
> groups on a certain measurement, given some previous data at hand. I find
> that the data collected does not follow a normal distribution, so I would
> like to us
Hi,
I am trying to estimate the sample size needed for the comparison of two groups
on a certain measurement, given some previous data at hand. I find that the
data collected does not follow a normal distribution, so I would like to use a
non-parametric option for sample size calculation.
I f
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