R-Sq Is a Measure of

R-sq is a measure of ...

A) the change in the y-variable that corresponds with the change in the x-variable.
B) the probability that the regression line makes a correct prediction.
C) the percentage of the accuracy of the regression equation.
D) the initial predicted starting point of the response variable when x is zero.
E) the proportion of the variability in the response variable that is explained by the explanatory variable.