| Minimum | Maximum | Mean | Std. Deviation | Variance | Skewness |
Age (year) | 19.00 | 72.00 | 38.66 | 12.80 | 163.78 | 0.84 |
Income (Million VND per month) | 2.00 | 70.00 | 9.983 | 8.17 | 66.72 | 3.40 |
Working Period (year) | 1.00 | 45.00 | 9.73 | 8.61 | 74.058 | 1.75 |
Living Period (year) | 1.00 | 72.00 | 19.22 | 20.22 | 408.90 | 0.93 |