statsmodels.tsa.arima_process.ArmaProcess.acf¶

ArmaProcess.acf(lags=None)[source]¶

Theoretical autocorrelation function of an ARMA process.

Parameters:¶

lags : int¶

The number of terms (lags plus zero lag) to include in returned acf.

Returns:¶

The autocorrelations of ARMA process given by ar and ma.

Return type:¶

ndarray

See also

arma_acovf

Autocovariances from ARMA processes.

acf

Sample autocorrelation function estimation.

acovf

Sample autocovariance function estimation.