Month 1 2 3 4 5 6 7 8 9 10 Sales 835 Forecast 1 Forecast 2 MAPE F1 MAPE F2 845 850 820 785 840 815 840 785 800 MSE MAD Forecast 1. 835 830 840 790 815 785 770 835 MSE Tracking signal Control limits 805 785 a. Compute the MSE and MAD for each forecast. (Round your answers to 2 decimal places.) 869.44 1,250.67 Forecast 2 765 830 2.7519 % 3.4380 % MAD 0 t 815 830 b. Compute MAPE for each forecast. (Round your intermediate calculations to 5 decimal places and final answers to 4 decimal places.) 800 806 775 810 815 805 c. Prepare a naive forecast for periods 2 through 11 using the given sales data. Compute each of the following; (1) MSE, (2) MAD, (3) tracking signal at month 10, and (4) 2s control limits. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) -1.25 69.91 22.50 28.40

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Question
Two independent methods of forecasting based on judgment and experience have been prepared each month for the past 10 months. The forecasts and actual sales are as follows:
Month
1
2
3
4
5
6
7
8
9
10
Sales
835
845
Forecast 1
Forecast 2
850
820
785
840
815
840
MAPE F1
MAPE F2
785
800
Forecast 1
835
830
840
790
815
785
770
835
805
785
a. Compute the MSE and MAD for each forecast. (Round
your answers to 2 decimal places.)
MSE
MSE
MAD
Tracking signal
Control limits
869.44
1,250.67
Forecast 2
765
830
815
830
2.7519 %
3.4380 %
MAD
b. Compute MAPE for each forecast. (Round your
intermediate calculations to 5 decimal places and final
answers to 4 decimal places.)
0 ±
800
806
775
810
815
805
22.50
28.40
c. Prepare a naive forecast for periods 2 through 11 using
the given sales data. Compute each of the following; (1)
MSE, (2) MAD, (3) tracking signal at month 10, and (4) 2s
control limits. (Negative values should be indicated by a
minus sign. Round your answers to 2 decimal places.)
-1.25
69.91
Transcribed Image Text:Month 1 2 3 4 5 6 7 8 9 10 Sales 835 845 Forecast 1 Forecast 2 850 820 785 840 815 840 MAPE F1 MAPE F2 785 800 Forecast 1 835 830 840 790 815 785 770 835 805 785 a. Compute the MSE and MAD for each forecast. (Round your answers to 2 decimal places.) MSE MSE MAD Tracking signal Control limits 869.44 1,250.67 Forecast 2 765 830 815 830 2.7519 % 3.4380 % MAD b. Compute MAPE for each forecast. (Round your intermediate calculations to 5 decimal places and final answers to 4 decimal places.) 0 ± 800 806 775 810 815 805 22.50 28.40 c. Prepare a naive forecast for periods 2 through 11 using the given sales data. Compute each of the following; (1) MSE, (2) MAD, (3) tracking signal at month 10, and (4) 2s control limits. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) -1.25 69.91
signment i
salts alt as iviIOWS.
Month Sales
835
845
850
820
785
840
815
840
785
800
1
2
3
4
5
6
7
8
9
10
Forecast 1
Forecast 2
MAPE F1
MAPE F2
Forecast 1
835
830
840
790
815
785
770
835
805
785
MSE
MAD
MSE
Tracking signal
Control limits
Saved
869.44
1,250.67
a. Compute the MSE and MAD for each forecast. (Round
your answers to 2 decimal places.)
Forecast 2
765
830
815
2.7519 %
3.4380 %
0+
MAD
830
800
806
775
810
815
805
b. Compute MAPE for each forecast. (Round your
intermediate calculations to 5 decimal places and final
answers to 4 decimal places.)
22.50
28.40
-1.25
69.91
He p
Save & Exit Submit
c. Prepare a naive forecast for periods 2 through 11 using
the given sales data. Compute each of the following; (1)
MSE, (2) MAD, (3) tracking signal at month 10, and (4) 2s
control limits. (Negative values should be indicated by a
minus sign. Round your answers to 2 decimal places.)
Check my work
Transcribed Image Text:signment i salts alt as iviIOWS. Month Sales 835 845 850 820 785 840 815 840 785 800 1 2 3 4 5 6 7 8 9 10 Forecast 1 Forecast 2 MAPE F1 MAPE F2 Forecast 1 835 830 840 790 815 785 770 835 805 785 MSE MAD MSE Tracking signal Control limits Saved 869.44 1,250.67 a. Compute the MSE and MAD for each forecast. (Round your answers to 2 decimal places.) Forecast 2 765 830 815 2.7519 % 3.4380 % 0+ MAD 830 800 806 775 810 815 805 b. Compute MAPE for each forecast. (Round your intermediate calculations to 5 decimal places and final answers to 4 decimal places.) 22.50 28.40 -1.25 69.91 He p Save & Exit Submit c. Prepare a naive forecast for periods 2 through 11 using the given sales data. Compute each of the following; (1) MSE, (2) MAD, (3) tracking signal at month 10, and (4) 2s control limits. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.) Check my work
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Step 1: State the given information

Forecast for 10 months is provided using 2 methods:

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