Given the following demand, please generate forecasts by arithmetic mean, last period value, MA (3), MA (5), ES (0.1), ES (0.4), and ES (0.9) Please calculate MAD and MSE for each forecasting method. Which forecasting method performs the best, the worst?

Week t Dt

1 88

2 88

3 97

4 83

5 91

6 93

7 73

8 85

9 92

10 87