一对于收入分配,经济学家一直最关注的是收入的不平等,即在现实条件下,人们之间收入的差别程度。一个国家收入分配状况最简单的统计表示是频数分布的平均数。但经常用于描述收入分配方面的状况,尤其是收入分配序列的中间部分的状况的方法是对数——正态分布。用横轴表示收入的对数,而相应的累积频数,即收入高于某一收入水平的全部组别的比重由纵轴以对数来表示,可得出与对数曲线图中向下倾斜的直线相当相似的分配曲线。一般人们认 For income distribution, economists have always been the most concerned about income inequality, that under realistic conditions, the level of income differences between people. The simplest statistical representation of a country’s income distribution is the average of the frequency distribution. However, the most commonly used method to describe the state of income distribution, especially the status of the middle part of the income distribution sequence, is log-normal distribution. The horizontal axis represents the logarithm of income, and the corresponding cumulative frequency, that is, the proportion of all groups whose income is above a certain income level, is represented by the logarithm of the vertical axis and can be shown as a downward slope with respect to the logarithmic graph The straight line quite similar to the distribution curve. Most people think