topic Unlikely Parameter Estimations in New SAS User

Unlikely Parameter Estimations

sasgiaz — Wed, 20 Feb 2019 04:55:48 GMT

Hi. I'm analyzing trend effect on my data which has hundred million rupiah as its unit.

I got the result of the parameter estimation for the interceipt valued more than hundred million rupiah and I think it's weird and doesn't make sense.. Because I think the result will be around hundred million rupiah like the original data valued. Can anyone tell me what is wrong with my analysis? I use the syntax like this:

proc reg data = arimaxvlp;
model Transaction = Time/influence;
run;

Thank u so much for ur help.

Re: Unlikely Parameter Estimations

PGStats — Wed, 20 Feb 2019 05:13:26 GMT

It could be that time=0 (where the intercept is estimated) is very far away from the time values in your data. You could center your time somewhere within your time data range to get a more meaningful intercept estimate.

Re: Unlikely Parameter Estimations

sasgiaz — Wed, 20 Feb 2019 06:23:53 GMT

I understand. Thank you so much!