Which of the following does a correlation coefficient not tell us?
A) If the difference between two means reflects a real difference or can be attributed to chance fluctuation.
B) The strength of a relationship between two measures.
C) The direction of a relationship between two measures.
D) How well a score on one measure can be predicted by a score on another.

Question

Quizplus · Accepted Answer

Correlation coefficient measures the strength and direction of the relationship between two measures, it doesn't tell us anything about the difference between two means.

Which of the Following Does a Correlation Coefficient Not Tell