c. Compute the correlation coefficient. (Negative value should be indicated by a minus sign. Round Sx, Sy and r to 3 decimal places.) X y ( x - X) ( y - y) ( x - D) (y - y) ( x - x) ( y - y ) 12 -4 16 20 4 A O NUT W -10 100 25 4 18 17 1 0 1. X = y = SX = Sy = r =