Explain methods for the number of gallons of gasoline, Operation Management

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Following are two weekly forecasts made by two different methods for the number of gallons of gasoline, in thousands, demanded at a local gasoline station. Also shown are actual demand levels in thousands of gallons-

Forecasts

week Method 1 Method 2 Actual Demand

1 0.95 0.77 0.70

2 1.05 1.21 0.98

3 0.92 0.92 0.96

4 1.22 1.11 1.04

The MAD for method 1 = ??

The mean squared error (MSE) for method 1= ??

The MAD for method 2 = ??

The mean squared error (MSE) for method 2= ??

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