 Autocorrelation technique

Autocorrelation is a statistical technique used to measure and analyze the degree of correlation between a time series and its own past values. In other words, it assesses how current values of a series are related to its previous values. This method is particularly useful in various fields such as signal processing, finance, economics, and statistics. Here are some key points about autocorrelation: 1. **Definition**: Autocorrelation is defined as the correlation of a time series with a lagged version of itself.