Use the following data to answer Questions 8 and 9.

Actual Value	Forecast Value
45	44
55	56
57	52
48	50
50	48

8. Calculate MAD

1. 2.2
2. 5.0
3. 1.0
4. 1.6

9. Calculate MSE

1. 7.0
2. 35.0
3. 5.9
4. 4.1