What is the main difference between a stationary and non-stationary time series?
1
Stationary time series have a constant mean and variance, while non-stationary time series do not
2
Stationary time series have a trend, while non-stationary time series do not.
3
Stationary time series have a seasonal component, while non-stationary time series do not
4
Stationary time series are easier to predict than non-stationary time series.