With the gasoline time series data from Table show the
With the gasoline time series data from Table show the exponential smoothing forecasts using α = 0.1.
GASOLINE SALES TIME SERIES
Week Sales (1000s of gallons)
1 ……….. 17
2 ……….. 21
3 ……….. 19
4 ……….. 23
5 ……….. 18
6 ……….. 16
7 ……….. 20
8 ……….. 18
9 ……….. 22
10………..20
11………..15
12………..22
a. Applying the MSE measure of forecast accuracy, would you prefer a smoothing constant of α = 0.1 or α = 0.2 for the gasoline sales time series?
b. Are the results the same if you apply MAE as the measure of accuracy?
c. What are the results if MAPE is used?
With the gasoline time series data from Table show the