The data on page 616 (stored in ThruSpeed) represent the average time (in seconds) it took to

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The data on page 616 (stored in ThruSpeed) represent the average time (in seconds) it took to be served at the drive-through at McDonald's from 1998 to 2009:
a. Plot the time series.
b. Fit a three-year moving average to the data and plot the results.
c. Using a smoothing coefficient of W = 0.50, exponentially smooth the series and plot the results.
d. What is your exponentially smoothed forecast for 2010?
e. Repeat (c) and (d), using W = 0.25.
f. Compare the results of (d) and (e).
The data on page 616 (stored in ThruSpeed) represent the
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Statistics For Managers Using Microsoft Excel

ISBN: 772

7th Edition

Authors: David M. Levine, David F. Stephan, Kathryn A. Szabat

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