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Author Question: Using a large value for order k in the moving averages method is effective in a. tracking changes ... (Read 157 times)

CORALGRILL2014

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on: Jun 24, 2018
Using a large value for order k in the moving averages method is effective in
 a. tracking changes in a time series more quickly.
  b. smoothing out random fluctuations.
  c. providing a forecast when only the most recent time series are relevant.
  d. eliminating the effect of seasonal variations in the time series.

Question 2

A ______________ is useful for visualizing hierarchical data along multiple dimensions.
 a. heat map b. hierarchical map
  c. treemap d. map of multiple hierarchy


shailee

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Reply #1 on: Jun 24, 2018
Answer to Question 1

b
RATIONALE: A moving average will adapt to the new level of the series and continue to provide good forecasts in k periods. Thus a smaller value of k will track shifts in a time series more quickly. On the other hand, larger values of k will be more effective in smoothing out random fluctuations.

Answer to Question 2

c
RATIONALE: In order to visualize hierarchical data along multiple dimensions, we use a tree map.


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CORALGRILL2014

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Reply #2 on: Jun 24, 2018
Thank you


shailee

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Reply #3 on: Jun 24, 2018
No problemo


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