Table 1 Fitted ARIMA models for Ghana, Niger, Nigeria, and Sierra Leone
MODEL | AIC | AICC | BIC |
|---|---|---|---|
(a) Ghana | |||
ARIMA (3,2,1) | −9.03 | −7.76 | 0.82 |
ARIMA (2,0,3) | −5.73 | −3.24 | 8.07 |
ARIMA (3,0,2) | −5.76 | −3.27 | 8.03 |
ARIMA (1,1,1) | 30.03 | 30.53 | 35.88 |
ARIMA (3,3,1) | 33.68 | 35.02 | 43.34 |
(b) Niger | |||
ARIMA (2,2,3) | 65.26 | 67.09 | 77.09 |
ARIMA (2,0,2) | 70.07 | 71.89 | 81.89 |
ARIMA (2,0,1) | 70.92 | 72.20 | 80.78 |
ARIMA (1,0,3) | 69.21 | 71.03 | 81.03 |
ARIMA (1,1,1) | 79.68 | 80.18 | 85.53 |
(c) Nigeria | |||
ARIMA (1,0,0) | 6.5 | 6.74 | 10.44 |
ARIMA (1,0,1) | 56.16 | 56.98 | 64.12 |
ARIMA (2,0,3) | 5.64 | 8.07 | 19.56 |
ARIMA (2,1,0) | 8.49 | 8.98 | 14.40 |
ARIMA (1,1,1) | 8.49 | 8.98 | 14.41 |
(d) Sierra Leone | |||
ARIMA (0,2,1) | 232.24 | 232.48 | 236.18 |
ARIMA (0,0,2) | 234.84 | 235.67 | 242.72 |
ARIMA (2,0,1) | 235.61 | 236.89 | 245.46 |
ARIMA (1,1,1) | 248.41 | 248.91 | 254.27 |
ARIMA (2,1,2) | 235.54 | 236.84 | 245.29 |