50/0 O 0-03X 11. A set of data relates the amount of annual salary raise and the performance rating. The least squares regression equation is y= 1,400 + 2,000x where y is the estimated raise and x is the performance rating. Which of the following statements is not correct? a. For each increase of one point in performance rating, the raise will increase on average by $2,000. b. This equation produces predicted raises with an average error of 0. C. A rating of 0 will yield a predicted raise of $1,400. d. The correlation for the data is positive. All of the above are true