A curvilinear relationship and a straight-line relationship between the two variables can exist simultaneously.

Question

Quizplus · Accepted Answer

A curvilinear relationship and a straight-line relationship represent two different types of relationships between variables; they cannot exist simultaneously between the same two variables under the same conditions. A curvilinear relationship implies that the change in one variable does not result in a constant change in the other variable, whereas a straight-line relationship implies a constant rate of change between the two variables.

A Curvilinear Relationship and a Straight-Line Relationship Between the Two