In: Advanced Math
Consider monthly demand for the ABC Corporation as shown below. Forecast the monthly demand for Year 6 using the 3-period moving average and 4-period moving average. Evaluate the bias, TS, MAD, MAPE and MSE. Evaluate the quality of the forecast
| 
 Sales  | 
 Year 1  | 
 Year 2  | 
 Year 3  | 
 Year 4  | 
 Year 5  | 
| 
 JAN  | 
 2000  | 
 3000  | 
 2000  | 
 5000  | 
 5000  | 
| 
 FEB  | 
 3000  | 
 4000  | 
 5000  | 
 4000  | 
 2000  | 
| 
 MAR  | 
 3000  | 
 3000  | 
 5000  | 
 4000  | 
 3000  | 
| 
 APR  | 
 3000  | 
 5000  | 
 3000  | 
 2000  | 
 2000  | 
| 
 MAY  | 
 4000  | 
 5000  | 
 4000  | 
 5000  | 
 7000  | 
| 
 JUN  | 
 6000  | 
 8000  | 
 6000  | 
 7000  | 
 6000  | 
| 
 JUL  | 
 7000  | 
 3000  | 
 7000  | 
 10000  | 
 8000  | 
| 
 AUG  | 
 6000  | 
 8000  | 
 10000  | 
 14000  | 
 10000  | 
| 
 SEP  | 
 10000  | 
 12000  | 
 15000  | 
 16000  | 
 20000  | 
| 
 OCT  | 
 12000  | 
 12000  | 
 15000  | 
 16000  | 
 20000  | 
| 
 NOV  | 
 14000  | 
 16000  | 
 18000  | 
 20000  | 
 22000  | 
| 
 DEC  | 
 8000  | 
 10000  | 
 8000  | 
 12000  | 
 8000  | 
| 
 Total  | 
 78000  | 
 89000  | 
 98000  | 
 115000  | 
 113000  |