Abhay Kaushik <abhaykaushik@HOTMAIL.COM> wrote > >I am running a multivariate regression where two of the variables have >extreme outliers. What options I can use to eliminate or minimize their >effect on my overall results.

Well, first I'd want to know *why* these variables have outliers.

Options include: 1) Deleting the outliers 2) Transforming the variables 3) Using robust forms of regression 4) Using a regression tree

and probably other things as well.... without some context, it's hard to give a recommendation.

See my post on sas-community, How to ask a statistics question

http://www.sascommunity.org/wiki/How_to_ask_a_statistics_question

Peter L. Flom, PhD Statistical Consultant www DOT peterflom DOT com