Compute a 3-month weighted average forecast for months 4 through 9. Assign weights of 0.55, 0.33 and 0.12 to the months in sequence, starting with the most recent month. Compare the two forecasts using MAD. Which forecast is better the 3-month moving average or the 3-month weighted moving average and why?
Compute a 3-month weighted average forecast for months 4 through 9. Assign weights of 0.55, 0.33 and 0.12 to the months in sequence, starting with the most recent month. Compare the two forecasts using MAD. Which forecast is better the 3-month moving average or the 3-month weighted moving average and why?
Practical Management Science
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Question
Compute a 3-month weighted average
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10
A
Month
1
2
3
4
5
6
7
8
9
B
C
Demand for Bronze Bearings 3-month Moving Average Error
50
100
60
80
140
100
90
120
70
80
93.33333333
106.6666667
110
103.3333333
D
10
60
E
10
Error²
100
3600
6.666666667 44.4444444
-16.66666667 277.777778
100
-103.3333333 10677.7778"
Transcribed Image Text:123456789
10
A
Month
1
2
3
4
5
6
7
8
9
B
C
Demand for Bronze Bearings 3-month Moving Average Error
50
100
60
80
140
100
90
120
70
80
93.33333333
106.6666667
110
103.3333333
D
10
60
E
10
Error²
100
3600
6.666666667 44.4444444
-16.66666667 277.777778
100
-103.3333333 10677.7778
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