1With the gasoline time series data from Table 15.1, show the exponential smoothing fore- casts using a = {1.1. a. Applying the MSE measure of

With the gasoline time series data from Table 15.1, show the exponential smoothing forecasts using a 5 0.1. a. Applying the MSE measure of forecast accuracy, would you prefer a smoothing constant of a 5 0.1 or a 5 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?

1With the gasoline time series data from Table 15.1, show the exponential smoothing fore- casts using a = {1.1. a. Applying the MSE measure of forecast accuracy, would you prefer a smoothingconstant of o = 0.1 or a = 0.2 for the gasoline sales time series? h. Are the results the same if you apply MAE as the measure of accuracy? c. What are the results if MAPE is used? TABLE 15.] GASOIJNE SALES TIME SERIES Week Sales (100115 of gallons)1 l72 213 194 235 136 167 208 139 22 10 20ll 1512 22