A store managers wishes to forecast the weekly number of television sets sold. Calculate the error for each of the following forecasts, the MAD and the MSE. Be sure to show the entire table in the work area of the template.

Period       Value Forecast Error

1                               202   —          —

2                               191  202

3                               173  192

4                               169  181

5                               171  174

6                               175  172

7                               182  174

8                               196  179

9                               204  189

10                             219  198

  11                 227  211

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