Sales of tablet computers at Ted Glickman's electronics store in Washington, D.C., over the past 10 weeks are shown in the table below:
|
WEEK
|
DEMAND
|
WEEK
|
DEMAND
|
|
1
|
20
|
6
|
29
|
|
2
|
21
|
7
|
36
|
|
3
|
28
|
8
|
22
|
|
4
|
37
|
9
|
25
|
|
5
|
25
|
10
|
28
|
a) Forecast demand for each week, including week 10, using exponential smoothing with a 5 .5 (initial forecast 5 20).
b) Compute the MAD.
c) Compute the tracking signal.