Estimate the value of mean absolute deviation

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Reference no: EM13101753

What is the value of the mean absolute deviation (MAD) for the forecasting technique whose forecasts for four past periods and the subsequent actual values are given below?

Actual	129	134	138	142
Forecast	136	126	130	146

1.25

5.25

2.50

0.50

6.75

Reference no: EM13101753

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