All of the following are true about a stationary time series EXCEPT
A)its statistical properties are independent of time.
B)a plot of the series will always exhibit a horizontal pattern.
C)the process generating the data has a constant mean.
D)there is no variability in the time series over time.

Question

Quizplus · Accepted Answer

A stationary time series does not have to exhibit a strictly horizontal pattern, and it may have variability over time. However, its statistical properties (such as mean and variance) remain constant over time.

All of the Following Are True About a Stationary Time