Exhibit 15-1
Below you are given the first five values of a quarterly time series. The multiplicative model is appropriate and a four-quarter moving average will be used.

-Refer to Exhibit 15-1. An estimate of the seasonal-irregular component for Quarter 3 of Year 1 is
A).64
B)1.5625
C)5.333
D)30

Question

Exhibit 15-1
Below you are given the first five values of a quarterly time series. The multiplicative model is appropriate and a four-quarter moving average will be used.
 
-Refer to Exhibit 15-1. An estimate of the seasonal-irregular component for Quarter 3 of Year 1 is
A).64 
B)1.5625 
C)5.333 
D)30

Quizplus · Accepted Answer

The seasonal-irregular component is the difference between the actual value and the trend-cycle component. In Quarter 3 of Year 1, the actual value is 30 and the trend-cycle component is 29.3675. Therefore, the seasonal-irregular component is 30 - 29.3675 = 0.6325, which is closest to choice A, 0.64.

Exhibit 15-1 Below You Are Given the First Five Values of a of a Quarterly