How to Detect Heteroskedasticity in Time Series

Detecting and dealing with non-constant variance in time series

Vitor Cerqueira
Towards Data Science
5 min readDec 19, 2022

--

Photo by Jannes Glas on Unsplash

A time series is heteroskedastic if its variance changes over time. Otherwise, the data set is homoskedastic.

Heteroskedasticity affects the modeling of time series. So, it is important to detect and deal with this condition.

--

--