Which of the Following Is True of R²

Multiple Choice

Which of the following is true of R²?

A) R² is also called the standard error of regression.
B) A low R² indicates that the Ordinary Least Squares line fits the data well.
C) R² usually decreases with an increase in the number of independent variables in a regression.
D) R² shows what percentage of the total variation in the dependent variable, Y, is explained by the explanatory variables.