e) Compute MAPE for the 2- and 3-period moving average Remember the forr MAPE=n(AtFt)/At f) Find the best number of periods for the moving average model based on MAPE. To do: The table to the right serves as a template to help you work out the solutions (you can do this manually, or using a spreadsheet) 1. calculate the 2- and 3-period SMA forecast models 2. calculate the MAPE for both forecast models 3. decide which model is best (the one with the least error, as determined by your MAPE calculations 4. click the "Answer here" button when you've finished