Repeat Exercise 20.15, using exponential smoothing with w = .8. In exercise 20.15 The following quarterly sales
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In exercise 20.15
The following quarterly sales of a department store chain were recorded for the years 2013€“2016.
a. Calculate the four-quarter centered moving averages.
b. Graph the time series and the moving averages.
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a Sales Exponentially smoothed w 4 Exponentially smoothed w 8 18 1800 1800 22 422618 1960 ...View the full answer
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