A regression of y on x gives y-hat = 5 + 2x.
For y = 25, what x value satisfies the prediction equation?
- Acheck_circle
10
- B
30
- C
12.5
- D
55
Explanation
Solve 25 = 5 + 2x giving x = 10. (Note: this is plugging into the equation, not a least-squares prediction of x from y.)