The following inventory pattern has been observed in the Zahm over 12 months:
|
Month |
Inventory |
Month |
Inventory |
|
|
Apr-16 |
1,544 |
Oct-16 |
1,208 |
|
|
May-16 |
1,913 |
Nov-16 |
2,467 |
|
|
Jun-16 |
2,028 |
Dec-16 |
2,101 |
|
|
Jul-16 |
1,178 |
Jan-17 |
1,662 |
|
|
Aug-16 |
1,554 |
Feb-17 |
2,432 |
|
|
Sep-16 |
1,910 |
Mar-17 |
2,443 |
Use both three-month and five-month moving-average models to forecast the inventory for the next January. Use mean absolute percentage error (MAPE) to evaluate these two forecasts.
