模型

Log likelihood

aic

ARIMA(1, 2, 0)

−805.12

1614.24

ARIMA(1, 2, 1)

−795.41

1596.83

ARIMA(2, 2, 0)

−803.48

1612.95

ARIMA(2, 2, 1)

−795.11

1598.23