11-12-2014 02:00 PM
I try to test for the equality of standard deviation of variables A and B in proc model.
but it does not work. I have this message.
ERROR: The function STD requires at least 2 arguments. There are too few arguments for the
if I test only the equality of parameters. I write
and it works.
11-12-2014 07:02 PM
The test statement in proc model (as in other SAS procs) is for testing constraints on the parameters of the model - not for testing characteristics of the variables themselves. The most straightforward way to test for the equality of standard deviations would be with proc ttest.