A time series which has no significant upward or downward trend is referred to as
A) static.
B) non-moving.
C) stationary.
D) non-stationary.

Question

Quizplus · Accepted Answer

A stationary time series is one whose statistical properties such as mean, variance, and autocorrelation do not change over time. This means there is no significant upward or downward trend in the series. Choice A and B do not accurately describe a time series that has no trend. Choice D describes a non-stationary time series which does have a trend.

A Time Series Which Has No Significant Upward or Downward