For a certain data set the regression equation is ŷ = 37 + 13x.The correlation coefficient between y and x in this data set _______.
A)must be 0
B)is negative
C)must be 1
D)is positive
E)must be 3

Question

Quizplus · Accepted Answer

The positive coefficient (13) in the regression equation indicates a positive relationship between x and y, meaning as x increases, y is predicted to increase as well. This implies a positive correlation coefficient.

For a Certain Data Set the Regression Equation Is ŷ