The R Squared (R²) Statistic May Be Defined as ______

The r squared (r²) statistic may be defined as ______.

A) the variation in one variable
B) the percentage of the standard deviation in one variable that is accounted for by another
C) the percentage of the mean difference in one variable that is accounted for by another variable
D) the percentage of variance in one variable that is accounted for by another variable