Research Article
Environmental Efficiency Evaluation of Chinese Industry Systems by Using Non-Cooperative Two-Stage DEA Model
Table 1
Descriptive statistics of raw data.
| | Variables | Units | Max | Min | Mean | Standard deviation |
| | Employees | 10000 persons | 2141.907 | 53.568 | 734.312 | 636.557 | | Fixed assets | 1 billion yuan | 12372.821 | 177.744 | 3810.847 | 2940.517 | | Electricity consumption | (100 million kW·h) | 4060.130 | 159.020 | 1399.280 | 1012.942 | | COD generation | 10000 tons | 261.256 | 4.237 | 61.668 | 59.218 | | SO2 generation | 10000 tons | 453.535 | 11.598 | 172.277 | 106.494 | | Solid waste generation | 10000 tons | 31688.000 | 212.000 | 8031.000 | 6635.777 | | GDP of the second industry | 1 billion yuan | 21462.720 | 385.210 | 6442.604 | 5475.785 | | Pollutant investment | 1 billion yuan | 456759.300 | 4353.500 | 132325.607 | 105065.660 | | VCU | 10000 yuan | 49.268 | 0.488 | 14.488 | 10.878 | | COD emission | 10000 tons | 138.287 | 2.817 | 62.144 | 36.129 | | SO2 emission | 10000 tons | 12011.451 | 0.001 | 1925.202 | 2644.794 | | Solid waste emission | 10000 tons | 2863867.000 | 31623.000 | 592826.533 | 650121.434 |
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