14 The following table contains the demand from the last 10 months:

a. Calculate the single exponential smoothing forecast for these data using an a of.30 and an initial forecast (F) of 31.

b. Calculate the exponential smoothing with trend forecast for these data using ana of .30, a 8 of .30, an initial trend forecast (T) of 1, and an initial exponentially smoothed forecast (F) of 30.

c. Calculate the mean absolute deviation (MAD) for each forecast. Which is best?

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MONTH ACTUAL DEMAND MONTH ACTUAL DEMAND 12345 31 6 36 34 7 38 33 8 40 4 35 9 40 37 10 41