If the correlation between X and Y is negative, the slope of the regression equation must be
A) negative.
B) positive.
C) non-significant.
D) It could be either a or b.

Question

Quizplus · Accepted Answer

If the correlation between X and Y is negative, it means that as X increases, Y tends to decrease. Therefore, the slope of the regression equation, which measures the change in Y per unit change in X, must also be negative.

If the Correlation Between X and Y Is Negative, the Slope