Problem 3-20 (Algo)

An analyst must decide between two different forecasting techniques for weekly sales of roller blades: a linear trend equation and the naive approach. The linear trend equation is F_t = 124 + 2.0t, and it was developed using data from periods 1 through 10. Based on data for periods 11 through 20 as shown in the table, which of these two methods has the greater accuracy if MAD and MSE are used? (Round your intermediate calculations and final answers to 2 decimal places.)

t	Units Sold
11	147
12	147
13	149
14	143
15	157
16	152
17	154
18	157
19	162
20	166

Click here for the Excel Data File

An analyst must decide between two different forecasting techniques for weekly sales of roller blades: a linear trend equation and the naive approach. The linear trend equation is Ft=124+2.0t, and it was developed using data from periods 1 through 10 . Based on data for periods 11 through 20 as shown in the table, which of these two methods has the greater accuracy if MAD and MSE are used? (Round your intermediate calculations and final answers to 2 decimal places.) Click here for the Excel Data File provides forecasts with less average error and less average squared error