Essay
The following data show the quarterly sales of Amazing Graphics, Inc. for the years 6 through 8. 
a.Compute the four-quarter moving average values for the above time series.
b.Compute the seasonal factors for the four quarters.
c.Use the seasonal factors developed in Part b to adjust the forecast for the effect of season for year 6.
Correct Answer:
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a.Centered Moving Averages: 1....View Answer
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