| 正态分布根方差的估计及其应用 |
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| 引用本文： | 胡宏昌,占天异. 正态分布根方差的估计及其应用[J]. 湖北师范学院学报(自然科学版), 2011, 31(4): 6-9 |
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| 作者姓名： | 胡宏昌 占天异 |
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| 作者单位： | 湖北师范学院数学与统计学院 |
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| 基金项目： | 教育部科学技术研究重点项目,湖北省教育厅重点项目 |
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| 摘 要： | 用四分位极差的方法估计正态分布的根方差,研究了子样四分位极差及根方差估计的密度函数,并结合实例,说明了四分位极差估计具有稳健性.
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| 关 键 词： | 根方差估计 四分位极差 密度函数 稳健性 |
The estimator of root variance normal distribution and its application |
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| HU Hong-chang,ZHAN Tian-yi. The estimator of root variance normal distribution and its application[J]. Journal of Hubei Normal University(Natural Science), 2011, 31(4): 6-9 |
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| Authors: | HU Hong-chang ZHAN Tian-yi |
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| Affiliation: | (College of Mathematics and Statistics,Hubei Normal University,Huangshi 435002,China) |
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| Abstract: | In this paper, the estimator of root variance in normal distribution is obtained by quartile deviation, and the density function of sample quartile deviation and estimator of root variance are given. At last, an example is investigated, and it is illustrate that the estimator of root variance is robust. |
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| Keywords: | the estimator of root variance quartile deviation density function robustness |
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