Lecture Exercise #1 Period Engine Failures 200 1 2 250 3 175 4 186 5 225 6 285 What is the forecast for period 7 using simple moving average with n=3? What about n= 6? What is the forecast for period 7 using weighted moving average using n = 4 and the following weights: W1 = 0.40 for most recent period, W2 = 0.30 for next most recent, W3 = 0.20 for the next and W4 = 0.10 for the next. What is the forecast for period 7 using exponential smoothing with a=0.10 . Lecture Exercise #3 Larry's Car Wash has the following data of cars per day for the past two weeks. Week 1 Week 2 How many seasons Mon. 95 85 are there? Tues. 110 100 Calculate the seasonal Wed. 100 115 indices Thurs. 115 120 Fri. 160 155 Forecast for Week 3 Sat. 260 275 Monday using seasonal decomposition with Sun. 220 190 moving average n= 5 42