Compute the mean absolute deviation for forecast

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Sales of a brand of dog food at Petco are in the table below. Compute a three period moving average and a four period moving average for weeks 7,8 and 9. Compute the Mean Absolute Deviation (MAD) for each forecast. Which model is more accurate? Forecast week 10 with the more accurate method.

Week Sales (cases)

1 19

2 23

3 29

4 33

5 21

6 19

7 23

8 25

9 20

Reference no: EM132176526

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