# statsmodels.tsa.arima_process.ArmaProcess.pacf¶

ArmaProcess.pacf(lags=None)[source]

Theoretical partial autocorrelation function of an ARMA process.

Parameters
lagsint

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

Returns
ndarrray

The partial autocorrelation of ARMA process given by ar and ma.

Notes

Solves yule-walker equation for each lag order up to nobs lags.

not tested/checked yet