We calculate the three-period moving averages for a time series for all time periods except the:
A)first period
B)last period
C)first and last period
D)first and last two periods

Question

Quizplus · Accepted Answer

The three-period moving average requires three consecutive periods to calculate an average. Therefore, we cannot calculate the moving average for the first two periods and the last two periods since we do not have three consecutive values before or after them. Hence, the best choice is to exclude the first and last period, as we need at least one period before and after to compute the moving average.

We Calculate the Three-Period Moving Averages for a Time Series