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Augmented Dickey-Fuller Test for the 1st difference of each variable.
| Augmented Dickey-Fuller Test |
|||
|---|---|---|---|
| Variable | Test statistics | Lag order | p-value |
| diff(Average speed) | −8.94 | 5 | 0.01 |
| diff(Speeding) | −10.09 | 5 | 0.01 |
| diff(Harsh braking/100 km) | −8.39 | 5 | 0.01 |
