Question: An operations manager must choose a forecasting model to adopt. He received forecasts from his analyst according to two models (M1 and M2) which are

An operations manager must choose a forecasting model to adopt. He received forecasts from his analyst according to two models (M1 and M2) which are presented in the table below. Forecast

Period Actual M1 M2

1 80 78 83

2 82 79 81

3 85 80 82

4 78 81 85

5 79 81 80

Calculate the root mean square deviation (EAM) for each of the forecasting techniques. Which is the most precise? M1 M2

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