Its economic meaning is: the percentage of the income of all residents used for uneven distribution.
The minimum Gini coefficient is equal to 0, indicating absolute average income distribution; The maximum value is equal to 1, which means that the income distribution is absolutely uneven; The actual Gini coefficient is between 0 and 1. If personal income tax can equalize income, the Gini coefficient will become smaller.
According to relevant United Nations organizations, if it is lower than 0.2, it means that the income is highly average; 0.2 ~ 0.3 means average; 0.3 ~ 0.4 is reasonable; 0.4 ~ 0.5 indicates a large income gap; More than 0.6 indicates a large income gap.
20 10 two researchers from Xinhua news agency pointed out that China's Gini coefficient actually exceeded 0.5. According to the data released by Southwestern University of Finance and Economics in Beijing today, the Gini coefficient of China families in 20 10 is 0.6 1, which is much higher than the global average of 0.44.
Extended data:
Advantages:
Gini coefficient can objectively reflect and monitor the gap between the rich and the poor, and predict, warn and prevent the polarization between the rich and the poor. Therefore, it has been widely recognized and adopted by all countries in the world.
Disadvantages:
It doesn't show where there is unfair distribution. There is no international standard for setting Gini coefficient. Some issues, such as whether taxes should be excluded, whether beneficiaries of public assistance should be excluded, whether non-local residents should be excluded, or whether government welfare should be added, are inconsistent, so there is no comparative standard.
References:
Baidu encyclopedia-Gini coefficient