Research Article
Spatial Analysis of Industrial Green Development and Sustainable Cities in the Yellow River Basin
Table 4
Collinearity test of influencing factors.
| Variable | Variance inflation factor (VIF) | Tolerance (T) | Conditional index (CI) |
| Industrial upgrading index | 1.054 | 0.949 | 2.931 | Urbanization rate | 1.109 | 0.901 | 3.45 | Reduction rate of energy consumption per unit of GDP | 1.143 | 0.875 | 4.485 | Total imports and exports to GDP ratio | 1.046 | 0.956 | 7.024 | Science and technology expenditures | 1.083 | 0.923 | 14.555 |
|
|