Suppose the correlation coefficient between two variables X
Suppose the correlation coefficient between two variables, X and Y, is found to be r = -0.95. Which of the following is most appropriate?
An increase in Y causes an increase X
As X increases, Y increases.
As X increases, Y decreases
An increase in X causes a decrease in Y
| A. | An increase in Y causes an increase X | |
| B. | As X increases, Y increases. | |
| C. | As X increases, Y decreases | |
| D. | An increase in X causes a decrease in Y |
Solution
As X increases, Y decreases
because relationship is negative. Also, correlation does not imply \"cause-effect\" relation
| C. | As X increases, Y decreases |
