15.
In a two-variable regression, Y is the dependent variable and X is the independent variable. The correlation coefficient between Y and X is 0.8. For this, which of the following is correct?
A:
8% variations in Y are explained by X
B:
64% variations in Y are explained by X
C:
0.8% variations in Y are explained by X
D:
80% variations in Y are explained by X
The answer is:
B