Question: The following questions use the data below. A store wants to predict quarterly sales. The owner has collected 3 years of sales data and wants
The following questions use the data below. A store wants to predict quarterly sales. The owner has collected 3 years of sales data and wants your help in analyzing the data using the double moving average model with k = 4.
| A | B | C | D | E | F | G | H | I | |
| 1 | Time | Actual | Moving | Dbl Moving | |||||
| 2 | Year | Qtr | Period | Sales | Ave | Ave | Level | Trend | Forecast |
| 3 | 1 | 1 | 1 | 368 | |||||
| 4 | 2 | 2 | 168 | ||||||
| 5 | 3 | 3 | 530 | ||||||
| 6 | 4 | 4 | 784 | 462.50 | |||||
| 7 | 2 | 1 | 5 | 770 | 563.00 | ||||
| 8 | 2 | 6 | 354 | 609.50 | |||||
| 9 | 3 | 7 | 1012 | 730.00 | 591.25 | 868.75 | 92.50 | ||
| 10 | 4 | 8 | 1244 | 845.00 | 686.88 | 1003.13 | 105.42 | 961.25 | |
| 11 | 3 | 1 | 9 | 1326 | 984.00 | 792.13 | 1175.88 | 127.92 | 1108.54 |
| 12 | 2 | 10 | 986 | 1142.00 | 925.25 | 1358.75 | 144.50 | 1303.79 | |
| 13 | 3 | 11 | 1624 | 1295.00 | 1066.50 | 1523.50 | 152.33 | 1503.25 | |
| 14 | 4 | 12 | 2090 | 1506.50 | 1231.88 | 1781.13 | 183.08 | 1675.83 | |
| 15 | 4 | 1 | 13 | ||||||
| 16 | 2 | 14 |
Refer to Exhibit 11.6. What formula should be entered in cell H9 to compute the trend using the double moving average model with k = 4?
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