An analyst must decide between two different forecasting techniques for weekly sales of rollerblades

QUESTION:

An analyst must decide between two different forecasting techniques for weekly sales of rollerblades: a linear trend equation and the naive approach. The linear trend equation is Ft = 124 + 2 t, 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 greater accuracy if MAD and MSE are used?

t………………………….Units Sold

11 …………………………….          147

12 …………………………….          148

13 …………………………….          151

14 …………………………….          145

15 …………………………….          155

16 …………………………….          152

17 …………………………….          155

18 …………………………….          157

19 …………………………….          160

20 …………………………….          165


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