10-18 In regression analysis, the coefficient of determination: a. Is used to determine the proportion of the total variation in the dependent variable (y) explained by the independent variable (X)....

10-18 In regression analysis, the coefficient of determination:

a. Is used to determine the proportion of the total variation in the dependent variable (y) explained by the independent variable (X).

b. Ranges between negative one and positive one.

c. Is used to determine the expected value of the net income based on the regression line.

d. Becomes smaller as the fit of the regression line improves.