If a correlation coefficient is 0.80, then:
a. the explanatory variable is usually less than the response variable.
b. the explanatory variable is usually more than the response variable.
c. below-average values of the explanatory variable are more often associated with below-average values of the response variable.
d. below-average values of the explanatory variable are more often associated with above-average values of the response variable.
e. none of the statements are correct.