Table 13.
Summary of estimated candidate SARIMA models for the 1st difference of each variable.
| Variable | Candidate model | Estimate | Std. Error | z value | Pr(>|z|) | AIC | BIC |
|---|---|---|---|---|---|---|---|
| diff(Average speed) | ma1 | −0.95 | 0.13 | −7.12 | 1.07e-12 *** | 116.94 | 122.36 |
| sma1 | −0.74 | 0.36 | −2.01 | 0.042 * | |||
| diff(Speeding) | ar1 | −0.60 | 0.12 | −4.99 | 6.15e-07 *** | 25.11 | 30.53 |
| sar1 | −0.49 | 0.14 | −3.65 | 2.61e-04 *** | |||
| diff(Harsh braking/100 km) | ma1 | −0.45 | 0.13 | −3.43 | 6.09e-04 *** | 194.11 | 205.70 |
| ma2 | −0.34 | 0.14 | −2.49 | 0.013 * | |||
| sar1 | 0.66 | 0.22 | 2.93 | 3.337e-03 ** | |||
| sma1 | −0.92 | 0.31 | −2.95 | 3.174e-03 ** | |||
| sma2 | 0.69 | 0.37 | 1.87 | 0.061 . |
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1.