Compara mètodes

	Model Autoregressiu (AR)	Model ARIMA (Autoregressive Integrated Moving Average)
Camp	Econometria	Econometria
Família	Regression model	Regression model
Any d'origen	1970s (popularised 1976)	1970
Autor original	George E. P. Box and Gwilym M. Jenkins	George Box and Gwilym Jenkins
Tipus	Time series model	Time series forecasting model
Font seminal	Box, G. E. P., & Jenkins, G. M. (1976). Time Series Analysis: Forecasting and Control (revised ed.). Holden-Day. ISBN: 978-0816211043	Box, G. E. P., & Jenkins, G. M. (1970). Time Series Analysis: Forecasting and Control. Holden-Day.
Àlies	AR model, AR(p) model, autoregression, AR process	ARIMA, Box-Jenkins model, integrated ARMA, ARIMA(p,d,q)
Relacionats	6	6
Resum	An autoregressive model of order p — AR(p) — expresses the current value of a time series as a linear function of its own p most recent past values plus a white-noise error. It is the building block of the Box-Jenkins family of time-series models and is widely used for forecasting stationary economic and financial series.	The ARIMA(p,d,q) model is the standard workhorse for univariate time series forecasting. It combines autoregressive terms (past values), differencing to induce stationarity, and moving average terms (past shocks) into a unified linear framework. Developed by Box and Jenkins (1970), it remains one of the most widely applied models in econometrics and applied statistics.