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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 = 127 + 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 answers to 2 decimal places.)

                     

t Units Sold
11 147
12 149
13 151
14 142
15 154
16 151
17 154
18 155
19 161
20 163

          
     
   MAD (Naive)   
   MAD (Linear)   
   MSE (Naive)   
   MSE (Linear)   
 

Operation Management, Management Studies

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