Question: . . 4 . 1 0 Data collected on the yearly registrations for a Six Sigma seminar at the Quality College are shown in the

..4.10 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 years 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 seems
better? [PX]4.11 Use exponential smoothing with a smoothing constant of 0.3 to forecast the registrations at the
seminar given in Problem 4.10. To begin the procedure, assume that the forecast for year 1
was 5,000 people signing up.
a. What is the MAD? [PX]
b. What is the MSE?
..4.10 Data collected on the yearly registrations for a Six Sigma

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