I. The monthly sales for Telco Batteries Inc., were as follows:
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 three and five month moving average for the last 6 months of historical data (months 6 thru 12).
b) Determine which of these forecasts are more accurate using the concept of MAD.