Date:         Tue, 24 Jul 2007 11:05:44 -0400
Reply-To:     Xin Wei <xinwei@STAT.PSU.EDU>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Xin Wei <xinwei@STAT.PSU.EDU>
Subject:      Re: random sampling

On Mon, 23 Jul 2007 13:19:00 -0400, wcw2 <wcw2@CDC.GOV> wrote:

>I need to select a random 72 observations from a parent column of 620
>observations (coded as 1,0) and then * 1000 or so for a Monte Carlo
>simulation. How can I do this?

I'll help you if you can explain to me what monte carlo simulation is. :)
haha joking.

you can assign a random number to each obs and then sort it and only pick
up the first 72 obs. something like this:

%do i=1 %to 1000;
    data one;
         set one;
         ran=rannor(&i);
    run;
    proc sort; by ran; run;
    data simu;
         set one;
         if _n_<=72;
    run;
%end;

but please tell me what monte carlo simu is. seriously.