THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The table below is the data set of the Shiller Real Home Price Index for the years 1894-1904.
Use a smoothing constant of α = 0.8 to determine the forecasts using simple exponential smoothing.

-The number of four-period centered moving averages of a time series with 20 time periods is:
A)28
B)24
C)20
D)16

Question

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The table below is the data set of the Shiller Real Home Price Index for the years 1894-1904.
Use a smoothing constant of α = 0.8 to determine the forecasts using simple exponential smoothing.
 
-The number of four-period centered moving averages of a time series with 20 time periods is:
A)28 
B)24 
C)20 
D)16

Quizplus · Accepted Answer

A four-period centered moving average can be calculated starting from the third period and ending at the (N-2)th period for a time series of N periods. For a time series with 20 periods, this results in 20 - 2 - 2 = 16 four-period centered moving averages.