Consider the following data set:

Month	Actual Sales	Forecast 1	Forecast 2
1	777	771	769
2	789	785	787
3	794	790	792
4	780	784	798
5	768	770	774
6	779	768	770
7	760	761	759
8	785	771	775
9	786	784	788
10	791	788	788

1. Calculate MAD and MSE for each forecast (forecast 1 and forecast 2).
2. Calculate MAPE for each forecast (forecast 1 and forecast 2).