Which Is NOT True About the Coefficient of Determination

Multiple Choice

Which is NOT true about the coefficient of determination?

A) As you add more variables,the R-square generally rises.
B) As you add more variables,the adjusted R-square can fall.
C) If the R-square is above 50%,the regression is considered significant.
D) The R-square gives the percent of the variation in the dependent variable that is explained by the independent variables.
E) The higher is the R-square,the better is the fit.