month sales
1 9
2 7
3 10
4 8
5 7
6 12
7 10
8 11
9 12
10 10
11 14
12 16
a) Compute a five and seven month moving average for the last 5 months of historical data (months 8 thru 12)
b.)Determine which of these forecasts are more accurate using the concept MAD (show work)