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?

a. =2*(D9-F9)/(4-1)
b. =2*(E9-F9)/(4*2)
c. =2*(E9-F9)/(4-1)
d. =2*(AVERAGE(E9,F9))/4

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