A correlation is:
A) a careful investigation of a single individual over time.
B) a measure of behavioral change following a clinical treatment.
C) the degree of difference between experimental and control-group outcomes.
D) a measure of the relationship between two variables.

Question

Quizplus · Accepted Answer

A correlation is a statistical measure of the relationship between two variables. It indicates how closely two variables are related and the direction of that relationship (positive or negative). It does not investigate a single individual or measure behavioral change following a treatment. It also does not measure the difference between experimental and control-group outcomes.

A Correlation Is