Exhibit 8 1 10 2 12 3 15 4 12 5 16 6 18 According to exhibit
Exhibit 8
1
10
2
12
3
15
4
12
5
16
6
18
According to exhibit 8,
Develop a three-week moving average and an exponential smoothing (use alpha=.8) to forecats week 7. Compare the two methods. Which appears to provide more accurate forecasts based on MSE?
| Week | Value |
| 1 | 10 |
| 2 | 12 |
| 3 | 15 |
| 4 | 12 |
| 5 | 16 |
| 6 | 18 |
Solution
The above sis 3 yearly moving averages.
The below is exponential smooting method
The exponential smoothing method is better.
| 1 | 10 | ||
| 2 | 12 | 37 | 12.33333 |
| 3 | 15 | 39 | 13 |
| 4 | 12 | 43 | 14.33333 |
| 5 | 16 | 46 | 15.33333 |
| 6 | 18 |
