Which of the following sets of characteristics would usually best describe an autoregressive process of order 3 )?
A) A slowly decaying acf, and a pacf with 3 significant spikes
B) A slowly decaying pacf and an acf with 3 significant spikes
C) A slowly decaying acf and pacf
D) An acf and a pacf with 3 significant spikes

Question

Quizplus · Accepted Answer

An autoregressive process of order 3 (AR(3)) typically exhibits a partial autocorrelation function (pacf) with 3 significant spikes corresponding to the order of the process, and a slowly decaying autocorrelation function (acf), as the influence of a specific lag diminishes gradually over time.

Which of the Following Sets of Characteristics Would Usually Best