| Provincea | Variable | Minimum | Maximum | Mean | Standard deviation |
| Shaanxi | Length of railways in operation (km) | 3300 | 5000 | 4333.33 | 471.699 |
| Length of highways (km) | 144,100 | 174,400 | 1.62E5 | 11,154.421 | |
| TVEI (100 thousand USD) | 12102 | 402028 | 2.08E5 | 122,932.946 | |
| Gansu | Length of railways in operation (km) | 2400 | 4700 | 3144.44 | 880.499 |
| Length of highways (km) | 1.14E5 | 1.43E5 | 1.3166E5 | 10,586.20696 | |
| TVEI (100 thousand USD) | 38,656 | 102,361 | 7.49E4 | 20,394.143 | |
| Qinghai | Length of railways in operation (km) | 1700 | 2300 | 2033.33 | 223.607 |
| Length of highways (km) | 60,100.00 | 80,900.00 | 7.01E4 | 7405.5918 | |
| TVEI (100 thousand USD) | 5868 | 19345 | 1.19E4 | 4841.537 |