| 正态总体方差和标准差的无偏估计 |
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| 引用本文： | 孙翠先,步金芳.正态总体方差和标准差的无偏估计[J].唐山学院学报,2012,25(3):5-6,9. |
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| 作者姓名： | 孙翠先 步金芳 |
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| 作者单位： | 1. 唐山学院基础教学部,河北唐山,063000
2. 唐山职业技术学院基础部,河北唐山,063000 |
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| 摘 要： | 在正态总体分布下,给出了方差及标准差的矩估计量和极大似然估计量,讨论了两者之间的关系,得出两类估计量相同,并进一步给出无偏估计量。
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| 关 键 词： | 正态总体 标准差 方差 无偏估计 |
Unbiased Estimation of Variance and Standard Deviation Based on Normal Population |
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| SUN Cui-xian,BU Jin-fang.Unbiased Estimation of Variance and Standard Deviation Based on Normal Population[J].Journal of Tangshan College,2012,25(3):5-6,9. |
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| Authors: | SUN Cui-xian BU Jin-fang |
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| Institution: | 1.Department of Foundational Teaching,Tangshan College,Tangshan 063000,China;2.Department of Foundational Teaching,Tangshan Vocational and Technical College,Tangshan 063000,China) |
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| Abstract: | Under population distribution of normal,moment estimation and maximum likelihood of variance and standard deviation are given.Its relation is discussed and it is concluded that two estimations are same.Finally,unbiased estimation is given. |
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| Keywords: | normal distribution standard deviation variance unbiased estimation |
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