(a) In a regression analysis, the sum of squares for the predicted scores is 100 and the sum of squares error is 200, what is R 2 ? (b) In a different regression analysis, 40% of the variance was...

(a) In a regression analysis, the sum of squares for the predicted scores is 100 and the sum of squares error is 200, what is R²? (b) In a different regression analysis, 40% of the variance was explained. The sum of squares total is 1000. What is the sum of squares of the predicted values?