If a pair of variables have a strong curvilinear relationship, which of the following is true?
A) The correlation coefficient will be able to indicate that curvature is present.
B) A scatter plot will not be needed to indicate that curvature is present.
C) The correlation coefficient will not be able to indicate the relationship is curved.
D) The correlation coefficient will be equal to zero.

Question

Quizplus · Accepted Answer

The correlation coefficient measures the strength and direction of a linear relationship between two variables. It does not capture non-linear patterns such as curvilinear relationships, thus it cannot indicate the relationship is curved.

If a Pair of Variables Have a Strong Curvilinear Relationship