Question

If the errors produced by a forecasting method for 3 observations are +3, +3, and -3, then what is the mean absolute deviatio

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Answer #1

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  • MEAN= Calculate the mean

+3+3+(-3)/3= 3/3= 1

  • Calculate the margin between each data point and the mean.

+3-1=2

+3-1=2

-3-1=-4

  • Add them together

2+2+(-4)

4-4

0

  • Divide the sum by the number of points given in data

0/3=0

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