Which of the following sets of characteristics would usually best describe an autoregressive process of order 3 (i.e. an AR(3))?7/20Which of the following sets of characteristics would usually best describe an autoregressive process of order 3 (i.e. an AR(3))?A slowly decaying acf, and a pacf with 3 significant spikesA slowly decaying pacf and an acf with 3 significant spikesA slowly decaying acf and pacfAn acf and a pacf with 3 significant spikesGiải thíchChọn đáp án: A