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多个对数正态分布总体变异系数的比较

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摘要 在研究偏态分布的数据中,对数正态分布是应用极其广泛的分布,具有重要的研究意义。文章基于广义p值的方法和Delta方法对多个相互独立的对数正态分布的变异系数进行了比较研究。对于广义p值的方法,首先根据分布参数的广义枢轴量构建出对数正态分布变异系数的广义枢轴量,并进一步构造得到假设检验所需的检验统计量,最后通过蒙特卡洛模拟的方法对文中提出的检验统计量进行了模拟研究;对于Delta方法同样采用了蒙特卡洛模拟的方法研究了检验统计量的表现。模拟结果表明,这两种检验方法具有优良的性质,它们都能够很好地控制第一类错误并且具有很大的势,但是Delta方法检验更优于广义p值检验,因此,在应用中更推荐使用Delta方法检验。
作者 牛翠珍 郭旭
出处 《统计与决策》 CSSCI 北大核心 2015年第12期20-23,共4页 Statistics & Decision
基金 中国人民大学2014年度拔尖创新人才培育资助计划成果
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