Q. The following table contains the demand from the last 10 months:
MONTH ACTUAL DEMAND
1 31
2 34
3 33
4 35
5 37 MONTH ACTUAL DEMAND
6 36
7 38
8 40
9 40
10 41

a. Compute the single exponential smoothing forecast for this information using an ad of .30 and an initial forecast (F 1) of 31.

b. Compute the exponential smoothing with trend forecast for these information using an ad of .30, a d of .30, an initial trend forecast ( T 1 ) of 1 and an initial exponentially smoothed forecast ( F 1 ) of 30.

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