The Gametime Hat Company manufactures baseball caps that have various team logos in an assortment of designs and colors. The company has had monthly sales for the past 24 months as follows:
Month ........ Demand (1,000s)
1 ........... 8.2
2 ........... 7.5
3 ........... 8.1
4 ........... 9.3
5 ........... 9.1
6 ........... 9.5
7 ........... 10.4
8 ........... 9.7
9 ........... 10.2
10........... 10.6
11 ........... 8.2
12 ........... 9.9
13 ........... 10.3
14 ........... 10.5
15 ........... 11.7
16 ........... 9.8
17 ........... 10.8
18 ........... 11.3
19 ........... 12.6
20 ........... 11.5
21 ........... 10.8
22 ........... 11.7
23 ........... 12.5
24 ........... 12.8
Develop a forecast model using the method you believe best and justify your selection by using a measure (or measures) of forecast accuracy.