If you're looking for a simple article about "What is 'autocorrelation'", you've come to the right place.

A technique used to detect cyclic activity in a complex signal.

Autocorrelation is also a correlation coefficient.

Autocorrelation represents the degree of similarity between a given time series and a lagged version of itself over successive time intervals.

This function allows the analyst to compare the current value of a data set to its past value.

The value of autocorrelation ranges from -1 to 1.

A value between -1 and 0 represents negative autocorrelation.

A value between 0 and 1 represents positive autocorrelation.

## Autocorrelation

### What is autocorrelation...

Updated May 2, 2019. Autocorrelation is a mathematical representation of the degree of similarity between a given time series and a lagged version of itself over successive time intervals.

### What is autocorrelation and how can I solve it...

Autocorrelation, also known as serial correlation, is the correlation of a signal with a delayed copy of itself as a function of delay. Informally, it is the similarity between observations as a function of the time lag between them. The analysis of autocorrelation is a mathematical tool for finding repeating patterns, such as the presence of a periodic signal obscured by noise, or identifying ...

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