The MAD for Method 1 = 0.153 thousand gallons (round your response to three decimal places). The mean squared error (MSE) for Method 1 = thousand gallons² (round your response to three decimal places).

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter13: Regression And Forecasting Models
Section13.7: Exponential Smoothing Models
Problem 28P: The file P13_28.xlsx contains monthly retail sales of U.S. liquor stores. a. Is seasonality present...
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Following are two weekly forecasts made by two different methods for the number of gallons of gasoline, in thousands, demanded at a local gasoline station. Also shown are actual demand levels, in
thousands of gallons:
Week
1
2
3
4
Forecast
Method 1
0.95
1.08
0.95
1.20
Actual
Demand
0.72
0.98
1.00
0.97
Week
1
2
3
4
Forecast
Method 2
0.82
1.19
0.92
1.15
Actual
Demand
0.72
0.98
1.00
0.97
The MAD for Method 1= 0.153 thousand gallons (round your response to three decimal places).
The mean squared error (MSE) for Method 1 = thousand gallons² (round your response to three decimal places).
Transcribed Image Text:Following are two weekly forecasts made by two different methods for the number of gallons of gasoline, in thousands, demanded at a local gasoline station. Also shown are actual demand levels, in thousands of gallons: Week 1 2 3 4 Forecast Method 1 0.95 1.08 0.95 1.20 Actual Demand 0.72 0.98 1.00 0.97 Week 1 2 3 4 Forecast Method 2 0.82 1.19 0.92 1.15 Actual Demand 0.72 0.98 1.00 0.97 The MAD for Method 1= 0.153 thousand gallons (round your response to three decimal places). The mean squared error (MSE) for Method 1 = thousand gallons² (round your response to three decimal places).
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