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, how much of the variation of the final grades in statistics can be explained by the variation of the numbers of classes missed by students? a. 59.21% b. 75 c. 40.79% d. 93.11% e. 35.06% f. None of the above