The Gini coefficient is an important indicator of the degree of inequality in distribution. It is generally accepted internationally that when the Gini coefficient is less than 0.2, it means that the income is absolute average; 0.3-0.4 means that it is relatively reasonable; 0.4-0.5 means that the income gap is large; and 0.6 means that the income gap Great disparity. Among the following options, the statement about the Gini coefficient is incorrect:. ['Gini coefficient is an indicator of income equality.', 'Gini coefficient can take any value between zero and 1, the more equal the income distribution, the smaller the Gini coefficient.', "China's urban Gini coefficient increased from 0.15 in 1978 to 0.32 in 2000, which indicates that the gap between the personal income of urban residents has gradually widened by 2000.", 'The Gini coefficient of rural areas in China was around 0.338 in the 1990s, which is a relatively reasonable area at the international level.']