|
What's the context?
Why are you comparing a model with an intercept with one without? (It's
usually
good to keep the intercept in, although there are exceptions).
As to how it could happen, I am not sure, but I *THINK* it could be the
result of one of
your variables being highly collinear with the intercept.
HTH
Peter
Peter L. Flom, PhD
Assistant Director, Statistics and Data Analysis Core
Center for Drug Use and HIV Research
National Development and Research Institutes
71 W. 23rd St
www.peterflom.com
New York, NY 10010
(212) 845-4485 (voice)
(917) 438-0894 (fax)
>>> luigi <luigi_angelucci@YAHOO.IT> 01/16/04 8:00 PM >>>
Hi statisticians,
i'm a newbie of statistics...
Running PROC REG with noint option the R^2 is far better than with the
intercept included in the model (.91 vs .75). SSTotal is much higher
but the target variable is always the same. How can it be possible?
How this result should be interpreted? SAS help references to
Kvalseth, 1985, but I can't find it.
Please help me!
Luigi
| 
