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美国统计学家洛伦茨(O·Lorenz)于1905年所提出,并用以衡量收入分配是否平等的一条曲线图形,通常是用来反映收入分配中各收入阶层的人口比例与其在总收入中所占份额去描述。此曲线图形有两个绝对的极端情况,即当收入分配的绝对平等(absolute equality)时,则表现为45度的对角线OC;反之当收入分配为绝对不平等(absolute inequality)时,即为一个人独占全部收入,则表现为三角形的全部面积。但经济上的实际情况是
The graph proposed by O Lorenz in 1905 and used to measure the equality of income distribution is usually used to reflect the proportion of the population of all income groups in income distribution and its share of total income Share to describe. This graph has two absolute extremes, that is, a diagonal OC of 45 degrees when the absolute equality of income distribution is assigned, whereas when the inequality of income distribution is absolute inequality For a person exclusive full income, the performance of the entire area of the triangle. But the economic reality is