Question Details

(Solution Download) An analyst must decide between two different forecasting techniques for weekly sales of roller blade


 

 

 

 

 

 

 

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 = 125 + 2.2t, 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

11144
12148
13151
14147
15154
16149
17154
18156
19158
20163

 

       

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  
  MAD (Naive)

 

  

  MAD (Linear)

 

  

  MSE (Naive)

 

  

  MSE (Linear)

 

  

 

     

 

 

 

 

 

 

 

  (Click to

 

select)Linear trendNaive method provides forecasts with less

 

average error and less average squared error.

 


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