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?

  • CreatedJuly 15, 2013
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