12. A simple forecasting method for weekly sales of flash drives used by a local computer dealer is to form the average of the two most recent sales figures. Suppose sales for the drives for the past 12 weeks were 4 83 Week: 2 3 5 7 8 9 10 11 12 Sales: 86 75 72 132 65 110 90 67 92 98 73 a. Determine the one-step-ahead forecasts made for periods 3 through 12 using this method. b. Determine the forecast errors for these periods. c. Compute the MAD, the MSE, and the MAPE based on the forecast errors computed in part (b).
12. A simple forecasting method for weekly sales of flash drives used by a local computer dealer is to form the average of the two most recent sales figures. Suppose sales for the drives for the past 12 weeks were 4 83 Week: 2 3 5 7 8 9 10 11 12 Sales: 86 75 72 132 65 110 90 67 92 98 73 a. Determine the one-step-ahead forecasts made for periods 3 through 12 using this method. b. Determine the forecast errors for these periods. c. Compute the MAD, the MSE, and the MAPE based on the forecast errors computed in part (b).
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:12. A simple forecasting method for weekly sales of flash drives used by a local
computer dealer is to form the average of the two most recent sales figures.
Suppose sales for the drives for the past 12 weeks were
4
83
Week:
2
3
5
7
8
9
10
11
12
Sales:
86
75
72
132
65
110
90
67
92
98
73
a. Determine the one-step-ahead forecasts made for periods 3 through 12 using
this method.
b. Determine the forecast errors for these periods.
c. Compute the MAD, the MSE, and the MAPE based on the forecast errors
computed in part (b).
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