Final answer:
The units for r are: A. the same as the explanatory variable. B. the same as the response variable. C. none, r is unitless.
Step-by-step explanation:
The units for r are:
- A. the same as the explanatory variable.
- B. the same as the response variable.
- C. none, r is unitless.
The correct answer is that r is unitless. The correlation coefficient, r, measures the strength of the linear association between two variables, x and y. It doesn't have any units because it is a ratio of the covariances of x and y to the individual standard deviations of x and y.