# Solved: Problem 15-09 with the gasoline time series data from the given table, show the exponential

Problem 15-09 with the gasoline time series data from the given table, show the exponential smoothing forecasts using α-0.1. GASOLINE SALES TIME SERIES Sales (1000s of gallons) 17 21 Week 23 18 16 20 18 10 20 15 12 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? Do not round your interim computations and round your final answers to two decimal places. α=0.1 α = 0.2 MSE Priicr: b. Are the results the same if you apply MAE as the measure of accuracy? Do not round your interim computations and round your final answers to two decimal places. α = 0.1 α=0.2 MAE C. What are the results if MAPE is used? Do not round your interim computations and round your final answers to two decimal places.

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