The coefficient of correlation r is a number that indicates the:
A) direction of the relationship between the dependent variable y and the independent variable x.
B) strength of the relationship between the dependent variable y and the independent variable x.
C) proportion of the variation in the dependent variable y that is explained by the independent variable x.
D) Only A and B are correct.
E) A,B,and C are all correct.

Question

Quizplus · Accepted Answer

The coefficient of correlation r indeed indicates both the direction (A) and the strength (B) of the relationship between two variables. However, it does not directly indicate the proportion of variation in the dependent variable explained by the independent variable; that is described by the coefficient of determination (r^2), not the coefficient of correlation r itself.

The Coefficient of Correlation R Is a Number That Indicates