Ophelia - very easy to implement in R/S-plus (check out the function 'sample' in R ) but, to be able to answer your question about other methods - what, exactly, are you trying to do? get CI's, etc?
On 4/11/07, Ophelia Wang <[EMAIL PROTECTED]> wrote: > Hi, > I have a data set that has about 15,000 data points (rows) that document > values of 15 variables (columns). Now I'd like to perform a random sampling > process (run 10,000 times) to randomly select 470 points and get the mean > values of my 15 variables (columns) out of these 470 points after the 10,000 > times of random sampling. Can anyone tell me how to write a script in SAS, > SYSTAT, R or S-Plus to perform this analysis? Or are there other methods I can > use? Thanks a lot! Ophelia > -- > Ophelia Wang > Doctoral student > Department of Geography and Environment > University of Texas at Austin > 210 West 24th Street, Austin, TX 78712, USA > Phone: 1-512-471-5116 > Fax: 1-512-471-5049 > Email: [EMAIL PROTECTED] >
