Hi,

I am new to STATA and I am trying to do a linear regression analysis for a college project.

I am getting the error message, "matrix not positive definite" when I run the 'reg' command

Further, when I run the 'vif' command to check for multicollinearity the error message reads, "not appropriate after regress, nocons;
use option uncentered to get uncentered VIFs"

Please help