| mean | SD | min | max | number of observations |
Per capita disposable income of urban residents (yuan) | 38222.92 | 6677.75 | 29537.29 | 48117.55 | 7 |
Per capita consumption expenditure of urban residents (yuan) | 27866.56 | 4476.985 | 21621.46 | 34424.12 | 7 |
Per capita disposable income of rural residents (yuan) | 14707.41 | 2746.619 | 11067.79 | 18818.42 | 7 |
Per capita consumption expenditure of rural residents (yuan) | 12579.89 | 2869.439 | 8937.76 | 16949.43 | 7 |