topic Compare distribution of SAME Variable over two data pulls / time in Statistical Procedures

Compare distribution of SAME Variable over two data pulls / time

AmitKB — Tue, 18 Dec 2012 18:02:43 GMT

Hi all,

I want to compare the same variable distribution over two data pulls or over time.

What I want to see if the distribution has changed over time statistically. Can i get KS stats for the variable.

How would i do it.

I appreciate all your help.

Regards,

Amit

Re: Compare distribution of SAME Variable over two data pulls / time

PGStats — Tue, 18 Dec 2012 18:18:18 GMT

You can get the tests that you want with npar1way like this :

data test;
do time = 10, 11;
     do i = 1 to 25;
          x = rand("NORMAL", time, 1);
          output;
          end;
     end;
run;

proc npar1way data=test edf;
class time;
var x;
run;