The Distribution of an Index of Dissimilarity for Two Samples from a Uniform Population

• 作者: Antonella Nannavecchia Giovanni Girone
• 来源期刊: 应用数学(英文)
• 学科: 医学
• 关键词: INDEX of DISSIMILARITY UNIFORM DISTRIBUTION SPACINGS
• 年，卷（期）: 2013,（7）
• 页码范围: 1028-1037
• 页数: 10页
• 分类号: R73

摘要

In this paper the authors study the sample behavior of the Gini’s index of dissimilarity in the case of two samples of equal size drawn from the same uniform population. The paper present the analytical results obtained for the exact distribution of the index of dissimilarity for sample sizes n ≤ 8. This result was obtained by expressing the index of dissimilarity as a linear combination of spacings of the pooled sample. The obtained results allow to achieve the exact expressions of the moments for any sample size and, therefore, to highlight the main features of the sampling distributions of the index of dissimilarity. The present study can enhance inferential statistical aspects about one of the main contributions of Gini.