DO NOT TYPE ANYTHING IN THE BLUE AREAIII Chapter 3 This problem is based on 13 on page 83, but has been modified. Answer the questions I have raised 9 10 Month March April May June Demand 55 60 55 72 60 63 75 July 13 24 August September 15 16 1. Forecast Demand for lune to September using a 3 month moving average, a 60/20/20 weighted moving average and exponential smoothing using alpha 33. For exponential smoothing assume the May forecast was 56. 2. Calculate the absolute deviation for all of your forecasts 3. Calculate a MAD for each of the three forecasting methods. Which performed best? 20 21 22 AD for Expo Smoothing 25 26 Month March April May June July August Septembe AD for 3 Mon Demand 3 Mon Moving 60/20/20 WA Expo Smooth Moving AD for WA 55 60 55 56 72 60 63 75 27 28 31 MAD 33 35 28