Data collected on the yearly registrations for a Six Sigma seminar at the Quality College are shown in the following table:

(a) Develop a 3-year moving average to forecast registrations from year 4 to year 12.
(b) Estimate demand again for year€™s 4 to 12 with a 3-year weighted moving average in which registrations in the most recent year are given a weight of 2, and registrations in the other 2 years are each given a weight of 1.
(c) Graph the original data and the two forecasts. Which of the two forecasting methods seemsbetter?

Transcribed Image Text:

Year 12 3 4 5 6 7 8 9 10 11 Registrations 4 6 45 10 8 7 9 12 14 15 (000)