Hi all:
I have a question on sample size calculation of 2 groups of data. If 2
groups of data are all normal distribution, then I can use the function
"n.indep.t.test.eq" from samplesize package.But if 2 groups of data are all
skewed distribution, but not normal distribution,how can I calculate the
sample size then?
I've tried many transformation (e.g. log arcsinÂ…) in order to transfer the
skewed distribution data into normal distribution data, but failed. So what
I can do is only find a calculation method to do with skewed data.
Any suggestions from you are welcome.
Thanks a lot for your help.
My best.
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
