What is the primary limitation of the correlation coefficient?
A) It is not appropriate if the variables are related in a linear fashion.
B) It cannot be used to establish causal relations between two variables.
C) It can be used to establish the direction of a relation between two variables but not the strength.
D) It can only be used if the data are measured on a nominal or ordinal scale.

Question

Quizplus · Accepted Answer

The primary limitation of the correlation coefficient is that it cannot be used to establish causal relations between two variables. It can only show the strength and direction of the relationship between two variables, but not whether one variable causes the other.

What Is the Primary Limitation of the Correlation Coefficient