(Steps Shown) Given the time-series data in Problem A, forecast demand for the next period using a two-period moving average model . (Hint: The example
Question: Given the time-series data in Problem A, forecast demand for the next period using a two-period moving average model . (Hint: The example in Table 5.3 shows how to create a three-period moving average from actual data and it shows a forecast value for January—study the example carefully.)
| Month | Sales |
| Jan | 12 |
| Feb | 14 |
| Mar | 10 |
| Apr | 16 |
| May | 20 |
| Jun | 21 |
| Jul | 23 |
| Aug | 20 |
| Sep | 18 |
| Oct | 19 |
| Nov | 16 |
| Dec | 15 |
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