An r 2 measure of 0.85 implies that a. The correlation between x and y equals 0.85.

Question:

An r² measure of 0.85 implies that
a. The correlation between x and y equals 0.85.
b. For a one-unit increase in x, we predict y to increase by 85%.
c. 85% of the response variable y can be explained by the linear relationship between x and y.
d. 85% of the variability we observe in the response variable y can be explained by its linear relationship with x.