Hi, R^2 and F stats are different whether one uses WLS or does a manual weighing. I noticed this after first dividing all variables in a model by X1 and then doing a wls with a weight variable = 1/X1^2. Everyting was exactly the same except R^2, adjR^2, F and p(F). I also noticed another inconsistency that the minus characters in English and the Turkish translations are different. The former uses "-" while the latter uses "-". Cheers Talha -- "An expert is a person who has made all the mistakes that can be made in a very narrow field." - Niels Bohr (1885-1962) --