You are given the following tables data, compute mean absolute deviation (MAD) for week 5 until week 6 based on two forecasting methods, (i) weighted moving average and (ii) exponential smoothing alpha value=0.4 if forecast for week 3 is 350 patient arrivals. Which forecasting method is better? (12 marks)

Week	Patient arrival.
1	401
2	380
3	410
4	384
5	500
6	350

Table 1: Actual Number of Arrival of a Hospital.

Time Period	Weight.
1	50%
2	20%
3	20%
4	10%

Table 2: Weight Assigned for Different Time Period.