Statistical Techniques in Business and Economics
Statistical Techniques in Business and Economics
18th Edition
ISBN: 9781260579611
Author: Douglas Lind; William Marchal; Samuel Wathen
Publisher: MCGRAW-HILL HIGHER EDUCATION
Question
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Chapter 18, Problem 30CE

a.

To determine

To draw: The graph of the given time series data. Also, draw conclusion from it.

b.

To determine

To calculate: All possible forecasts using a smoothing coefficient α of 0.3 .

c.

To determine

To calculate: All possible forecasts using a smoothing coefficient α of 0.7 .

d.

To determine

To calculate: The MAD for forecasts using a smoothing coefficient α of 0.4 and a smoothing coefficient α of 0.9 .

e.

To determine

To find: The forecast model that should be chosen.

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