The following ratio-to-moving averages for the seasonally adjusted series were found by the decomposition method applied on a time series representing quarterly sales for the last three years: Which of the following is the seasonal index for the fourth quarter?
A) 1.3300
B) 1.3571
C) 1.3842
D) 1.2942

Question

The following ratio-to-moving averages for the seasonally adjusted series were found by the decomposition method applied on a time series representing quarterly sales for the last three years:  Which of the following is the seasonal index for the fourth quarter?
A) 1.3300 
B) 1.3571 
C) 1.3842 
D) 1.2942

Quizplus · Accepted Answer

The ratio-to-moving averages for the fourth quarter is 1.3571, which represents the seasonal index.

The Following Ratio-To-Moving Averages for the Seasonally Adjusted Series Were