Some Sampling Properties of a Model for Income Distribution
收入分布模型的若干抽样性质AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要以人口收入分布、基尼系数及不平等指标的置信区间为对象,并讨论分组数据的影响,直接对应分布与不平等分析。
收入分布模型的若干抽样性质AI 解读 ↓
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A recently proposed model for describing the distribution of income over a population, based on the Burr distribution, has been shown to fit better than the commonly used lognormal or gamma distributions. The current article extends that analysis by deriving the large-sample properties of the maximum likelihood estimates for this three-parameter model. Consequently, resulting confidence intervals for some measures of income inequality (including the Gini index) are used to further test the model's validity, as well as to examine apparent trends in inequality over time. Since these properties depend on the way the income data are grouped and censored, implications for choosing data-report intervals can be analyzed. Specifically, a choice between two common methods of reporting the data is shown to have an important impact on Gini index estimates.