A study of household income inequality in China: perspective of educational homogeneity marriage

Figures & data

Table 1. Total and per capita household income in China.

Year	Total household income				per capita household income
	Mean	Standard Deviation	Skewness	Peak	Mean	Standard Deviation	Skewness	Peak
2006	19399	44040	47.1	3104.1	6429	20259	59.77	4357.7
2008	28662	38395	10.39	225.3	8204	11413	8.35	149.8
2011	55897	161164	41.45	2344.4	19563	38893	27.75	1201.6
2013	59708	162318	40.51	2202.2	15647	49212	40.67	2004
2015	64023	100813	16.04	481.1	16733	28510	19.11	681.28
2017	66252	135070	44.26	3094.5	17319	26516	13.11	368.2

Source: CSS survey data from 2006 to 2017.

Table 2. Measurement results of inequality index.

Year	Total household income		per capita household income
	Gini coefficient	Theil index	Gini coefficient	Theil index
2006	0.5048	0.5459	0.5355	0.6582
2008	0.4777	0.4429	0.5048	0.492
2011	0.5192	0.6618	0.5396	0.6561
2013	0.5033	0.6113	0.527	0.6843
2015	0.4955	0.4975	0.5197	0.5441
2017	0.5101	0.5388	0.5301	0.5418

Note:

^a Data source: CSS survey data from 2006 to 2017.

^b Theil index is a common form of the generalised entropy index. When the parameter is equal to 1, the generalised entropy index is similar to the Theil index. In the calculation results of the inequality index in the above table, the parameter of the Theil index is selected as 0.

Figure 1. Gini coefficient of household income in China from 2006 to 2017.

Source: CSS survey data from 2006 to 2017.

Figure 2. Estimation of adaptive Kernel density of total household income.

Source: CSS survey data from 2006 to 2017.

Figure 3. Estimation of adaptive Kernel density of per capita household income.

Source: CSS survey data from 2006 to 2017.

Figure 4. Distribution of total household income in China from 2006 to 2017.

Source: CSS survey data from 2006 to 2017.

Figure 5. Distribution of the number of households of different sizes in China.

Source: CSS survey data from 2006 to 2017.

Figure 6. Distribution of total household income inequality in China: differences in household size.

Source: CSS survey data from 2006 to 2017.

Figure 7. Proportion of household heads with different educational attainment.

Source: CSS survey data from 2006 to 2017.

Figure 8. Inequality distribution of total household income in China: differences in the educational attainment of household heads.

Source: CSS survey data from 2006 to 2017.

Figure 9. Sample proportion of different marital structures.

Source: CSS survey data from 2006 to 2017.

Figure 10. Inequality distribution of total household income in China: differences in marital structure.

Source: CSS survey data from 2006 to 2017.