Variable type | Variable name | Variable definitions | Min | Max | Mean | Standard deviation | |
Dependent | Education expenditure (lnexp) | Education expenditure last year | 1.60 | 10.82 | 6.49 | 1.44 | |
Explanatory variables | Family investment ability: Whether the mother is Employed (work_m) Mother’s income (lnpinc_m) Whether the father is employed (work_f) Father’s income (lnpinc_f) |
1 = yes; 0 = no Mother’s annual income (yuan)
1 = yes; 0 = no Father’s annual income (yuan) |
0 0 0 0 |
1 13.59 1 13.30 |
0.37 8.60 0.57 9.46 |
0.48 1.72 0.49 1.14 | |
human capital: Mother’s degree (edu_m) Father’s education (edu_f) |
1 = illiteracy; 2 = primary school; 3 = junior high school; 4 = high school; 5 = College; 6 = Undergraduate; 7 = master’s degree; 8 = PhD |
1 1 |
8 8 |
2.57 2.86 |
1.25 1.20 | ||
Investment object Child sex (gender_c) Account type (hukou_c) |
1 = male; 0 = female 1 = city; 0 = rural |
0 0 |
1 1 |
0.51 0.29 |
0.49 0.45 | ||
Cross terms (cross) | work_m*gender_c, Cross-term between employment of |mother and child’s gender | 0 | 1 | 0.19 | 0.39 | ||
Mother’s age (age_m) Father’s age (age_f) Child’s age (age_c) | Age of child mother Child father’s age Child’s age | 21 36 6 | 76 77 15 | 36.42 38.33 10.43 | 5.21 5.49 2.93 | ||
| Mother’s area (region_m) | 1 = west; 2 = middle; 3 = east | 1 | 3 | 2.19 | 0.79 | |