did you try to fit your data with a skew-normal/skew-t distribution? If that works, you can use simulation.
Kjetil On Tue, Mar 15, 2011 at 2:31 AM, Lao Meng <laomen...@gmail.com> wrote: > 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 arcsin…) 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. > > ______________________________________________ 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.
