Table 1 Descriptive statistics and correlation coefficient of variables.
Variables | Average value | Standard deviation | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1Cerp | 1.302 | 0.413 | 1 | ||||||||||
2GreRatioA | 0.296 | 0.417 | 0.184 ∗  ∗  ∗  | 1 | |||||||||
3DigTra | 0.013 | 0.031 | 0.014 ∗  ∗  | 0.220 ∗  ∗  ∗   | 1 | ||||||||
4Energy | 16.124 | 3.295 |  − 0.225 ∗  ∗  ∗    | 0.090 ∗  ∗  ∗  | 0.119 ∗  ∗  ∗  | 1 | |||||||
5Lev | 0.487 | 0.280 |  − 0.268 ∗  ∗  ∗    | 0.005 | 0.025 | 0.342 ∗  ∗  ∗   | 1 | ||||||
6Npgr |  − 0.668 | 27.087 | 0.211 ∗  ∗  ∗  | 0.190 ∗  ∗  ∗  | 0.079 ∗  ∗  ∗  |  − 0.001 |  − 0.117 ∗  ∗  ∗    | 1 | |||||
7Catr | 1.746 | 1.381 |  − 0.310 ∗  ∗  ∗    | 0.022 | 0.018 | 0.253 ∗  ∗  ∗  | 0.184 ∗  ∗  ∗  | 0.008 | 1 | ||||
8Rder | 0.004 | 0.014 | 0.205 ∗  ∗  ∗   | 0.075 ∗  ∗  ∗  | 0.052 ∗  ∗  ∗  |  − 0.091 ∗  ∗  ∗    |  − 0.111 ∗  ∗  ∗    |  − 0.002 |  − 0.117 ∗  ∗  ∗    | 1 | |||
9Struct | 0.453 | 0.112 |  − 0.160 ∗  ∗  ∗    |  − 0.222 ∗  ∗  ∗    |  − 0.124 ∗  ∗  ∗   | 0.031 ∗  |  − 0.017 |  − 0.129 ∗  ∗  ∗    | 0.062 ∗  ∗  ∗    |  − 0.001 | 1 | ||
10Ers | 1.199 | 2.644 | 0.056 ∗  ∗  ∗  | 0.211 ∗  ∗  ∗  | 0.122 ∗  ∗  ∗  | 0.075 ∗  ∗  ∗  | 0.045 ∗  ∗  | 0.127 ∗  ∗  ∗  | 0.027 ∗  |  − 0.004 |  − 0.178 ∗  ∗  ∗    | 1 | |
11Pgdp | 9.701 | 8.024 | 0.121 ∗  ∗  ∗    | 0.197 ∗  ∗  ∗  | 0.087 ∗  ∗  ∗   |  − 0.038 ∗  ∗  |  − 0.006 | 0.111 ∗  ∗  ∗  |  − 0.083 ∗  ∗  ∗    | 0.065 ∗  ∗  ∗    |  − 0.156 ∗  ∗  ∗    | 0.223 ∗  ∗  ∗  | 1 |
