topic Re: limiting number of days observed for regression in SAS Programming

limiting number of days observed for regression

dangoebel — Tue, 28 Oct 2014 18:03:59 GMT

I have a dataset that has 90 days work of history that I am doing a regression on. I'd like to also do regressions based on the last 25 days and the last 10 days of history. Does anyone know of a way to do this in SAS?

Re: limiting number of days observed for regression

dangoebel — Tue, 28 Oct 2014 18:06:22 GMT

also worth mentioning is my data is set up with the most recent day as the last observation (90). So instead of regressing 1-90 I'd need to do 65-90 for a 25 day regression.

Re: limiting number of days observed for regression

stat_sas — Tue, 28 Oct 2014 18:31:12 GMT

Try obs data set option like this.

proc reg data=have(obs=10);

model Y=X;

run;

quit;

proc reg data=have(obs=25);

model Y=X;

run;

quit;

Re: limiting number of days observed for regression

dangoebel — Tue, 28 Oct 2014 19:18:38 GMT

Perfect! Thanks