The following table shows the actual demand observed over the last? 11? years:
Year, 1/2/3/4/5/6/7/89/10/11
Demand-8/8/4/10/13/7/13/14/8/11/7
??a) Using? the? 3-year? moving? average, provide the forecast from periods 4 through 12 ???(round your responses to one? decimal? place).
Year-4/5/6/7/8/9/10/11/12
Forecast/___/___/__/___/____/___/____/____/____
??b) Using? the? 3-year weighted moving average with weights? 0.10, 0.35 and? 0.55?, using 0.55 for the most? recent? period, provide the forecast from periods 4 through? 12? ?(round your responses to two? decimal? places).
Year-4/5/6/7/8/9/10/11/12
Forecast-___/___/___/___/____/___/____/____/____
??c) Mean absolute deviation for the forecast developed using? the? 3-year moving average is 3.31 and for? the? 3-year weighted moving average is 3.61. Based on? this? information, the better forecast is achieved using the following? approach:
A. weighted moving average
B.? 3-year moving average
Click to select your answer(s).