How do you choose the order p and q for a ARMA(p,q) process for modeling a time series?
Can that be told from ACF or PACF alone, just like for a AR(p) or MA(q) process?
How do you choose the order p and q for a ARMA(p,q) process for modeling a time series?
Can that be told from ACF or PACF alone, just like for a AR(p) or MA(q) process?