Hello,

my question is regarding regression and mean value.
So one group of my dataset has better Performance in the mean value than another group so I would think this group outperforms the second group. But in my Regression I have negativ coefficients of the independent variable of group 1 (I have a few controllvariables) (dependet variable is alpha=Performance) and a positive coefficent of the group 2 in a seperate regression. How could I interprete these results, kind of counterintuitive?
Thanks alot