THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The table below is the data set of the number of preorders received for a particular game on a weekly basis.
The forecaster uses the Holt-Winters Exponential Smoothing for nonseasonal series to forecast the number of preorders in future time periods.
He uses α = 0.8 and β = 0.5.(Hint: Use the formula from the text to arrive at the answers. )

-The simple exponential smoothing model is most appropriate for a time series that is:
A)seasonal and has no consistent upward or downward trend.
B)seasonal and has a consistent upward or downward trend.
C)nonseasonal and has a consistent upward or downward trend.
D)nonseasonal and has no consistent upward or downward trend.

Question

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The table below is the data set of the number of preorders received for a particular game on a weekly basis.
The forecaster uses the Holt-Winters Exponential Smoothing for nonseasonal series to forecast the number of preorders in future time periods.
He uses α = 0.8 and β = 0.5.(Hint: Use the formula from the text to arrive at the answers. )
 
-The simple exponential smoothing model is most appropriate for a time series that is:
A)seasonal and has no consistent upward or downward trend. 
B)seasonal and has a consistent upward or downward trend. 
C)nonseasonal and has a consistent upward or downward trend. 
D)nonseasonal and has no consistent upward or downward trend.

Quizplus · Accepted Answer

The Holt-Winters Exponential Smoothing for nonseasonal series is most appropriate for a time series that has no consistent upward or downward trend. Therefore, the best choice is option D, which represents a nonseasonal time series with no consistent trend.