Counselors using assessments must understand basic statistics, including correlation, to interpret test data appropriately. A correlation coefficient (r) ranges from −1.00 to +1.00 and reflects the strength and direction of a linear relationship between two variables.
A correlation of 0 (option A) indicates no linear relationship between the variables—knowing one gives no information about predicting the other in a straight-line fashion.
−1.00 (B) indicates a perfect negative linear relationship: as one variable increases, the other decreases in a perfectly predictable way.
+1.00 (C) indicates a perfect positive linear relationship: as one variable increases, the other also increases in a perfectly predictable way.
Unable to determine (D) is incorrect because the coefficient itself does provide this information.
Therefore, 0 represents a complete lack of linear relationship, making A the correct answer.
Contribute your Thoughts:
Chosen Answer:
This is a voting comment (?). You can switch to a simple comment. It is better to Upvote an existing comment if you don't have anything to add.
Submit