Re: [R] Sample size calculation for non-normal population with unknown mean and SD

2010-07-26 Thread Bert Gunter
The obvious: Take a small sample, say 25-50.  Get an estimate of your distribution from that. Then use this to determine how many more (if any) additional samples you need for desired precision. This latter can probably easily be done via simulation/bootstrap if you don't want to specify a paramet

[R] Sample size calculation for non-normal population with unknown mean and SD

2010-07-26 Thread Majonu
Basically, we have a population of 4,392 documents and we want to find out the number of patents per document. We don’t want to go through all 4,392 documents, but want a reliable sample size from which to draw inferences. I feel like this count data will not follow a normal distribution, but more