The past demands at a medical clinic follow:

The clinic's administration is considering the following forecasting methods. Start error measurement in the fourth week, so all methods are evaluated over the same periods.
i. Naive (1-period moving average)
ii. 3-period moving average
iii. Exponential smoothing, with a = 0.28.
iv. Trend projection with regression
v. Which forecasting method should management use if the performance criterion it chooses is

• CFE?
• MSE?
• MAD?
• MAPE?

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WEEK DEMAND 137 136 143 136 141 128 149 136 134 142 125 134 118 WEEK DEMAND 13 12A 121 10 12 13 1 2