Hello, I have a question about setting the seed in proc surveyselect. I have to select a random sample in each of eight regions. Each region has a separate sampling frame and I plan to create a separate sampling program for each region. The code I plan to use for each region is proc surveyselect data=data1 out=data2 method=srs n=(40 20 40 20 40 20) seed= ; strata strat1 strat2 ; run; I left the seed blank in this code because this is what I am asking about. How should I choose the seed? Should I use a program that generates a random number? Does anyone have an example of such a program? Is it alright to use the same seed for every region or should I generate a random number for each region's seed? Another option would be to run the program without a seed, then use the the seed generated by proc surveyselect, which is the time of day from the computer's clock. Thanks for your help. Robin
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