Open Access
Table 3
Some of the statistical parameters of the dataset used in this study.
| Item | Year | Population (million) | GDP ($) | Vehicle kilometer (×109 km) | Energy consumption (Mtoe) | CO2 (×106 ton) |
|---|---|---|---|---|---|---|
| Observation | 47 | 47 | 47 | 47 | 47 | 47 |
| Maximum | 2016 | 79821724 | 12614.48 | 6.48 | 25.88 | 68.619 |
| Median | 1993 | 56605264 | 4375.17 | 42.33 | 10.75 | 34.12 |
| Minimum | 1970 | 34876303 | 455.10 | 119.67 | 3.21 | 11.503 |
| Difference | 46 | 44945421 | 12159.38 | 113.19 | 22.67 | 57.116 |
| Skewness | 0.00 | 0.02 | 1.00 | 0.91 | 0.95 | 0.62 |
| Kurtosis | −1.20 | −1.15 | −0.52 | −0.09 | 0.31 | −0.20 |
| Standard deviation | 13.71 | 1313 5678.4 | 3888.46 | 30.76 | 5.87 | 15.27 |
| Standard error | 2 | 1916 035.6 | 567.19 | 4.49 | 0.86 | 2.23 |
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