please help with part 1-4!!

Following are two weekly forecasts made by two different methods for the number of gallons of gasoline, in thousands, demanded a a local gasoline station. Also shown are actual demand levels, in thousands of gallons: The MAD for Method 1 = thousand gallons (round your response to three decimal places). The MAD for Method 1=0.128 thousand gallons (round your response to three decimal places). The mean squared error (MSE) for Method 1=0.026 thousand gallons 2 (round your response to three decimal places). The MAD for Method 2 = thousand gallons (round your response to three decimal places). The mean squared error (MSE) for Method 2=0.016 thousand gallons 2 (round your response to three decimal places)