If there is no relationship between two variables, then the Pearson's correlation coefficient between them will be:
A) +1.0.
B) -1.0.
C) +0.50.
D) 0.

Question

Quizplus · Accepted Answer

If there is no relationship between two variables, then Pearson's correlation coefficient will be zero. A correlation coefficient of +1 indicates a perfect positive linear relationship, while a correlation coefficient of -1 indicates a perfect negative linear relationship. A correlation coefficient of +0.50 indicates a positive linear relationship, but it is not perfect. Therefore, the best choice is D, which represents no relationship at all.

If There Is No Relationship Between Two Variables, Then the Pearson's