The regression equation, y = 93.11 7.196x , expresses statistical dependence of the final grade in statistics (y) on the number of classes missed by students (x) in a sample of 75 statistics students. If the coefficient of determination is r2 = 0.5921, then the coefficient of correlation is a. r = -r2 = -0.5921, as the coefficient b1 (- 7.196) is negative. b. 0.5921 0.7695 2 r = r = = , as the coefficient b1 ( 7.196)is negative. c. ( ) 0.3506 2 2 r = r = , as the coefficient b1 ( 7.196)is negative. d. ( ) 0.3506 2 2 r = r = , as the coefficient b1 (7.196)is positive. e. 0.5921 0.7695 2 r = r = = , as the coefficient b1 (7.196)is positive.