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= 123 + 1.8t, 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

11 143

12 146

13 152

14 142

15 154

16 152

17 155

18 155

19 159

20 165

MAD (Naive) _______

MAD (Linear)_______

MSE (Naive)________

MSE (Linear)_______

Naive method or Linear trend ? provides forecasts with less average error and less average squared error.