Calculate MAD, MAPD of the following forecasting method. Also calculate MSE.

Period…………..Demand…………Forecasts

……1……………….256………………..–

……2……………….270………………..243

……3……………….248………………..249

……4……………….265………………..241

……5……………….244………………..253

Absolute error of period 2:

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Absolute error of period 3:

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Absolute error of period 4:

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Absolute error of period 5:

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MAD:

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MSE:

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Absolute percentage error of period 2:

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Absolute percentage error of period 3:

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Absolute percentage error of period 4:

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Absolute percentage error of period 5:

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MAPD

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