| 超几何分布的数学期望和方差的定义求法 |
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| 引用本文： | 匡能晖.超几何分布的数学期望和方差的定义求法[J].数学学习,2010,13(4):73-74. |
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| 作者姓名： | 匡能晖 |
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| 作者单位： | 湖南科技大学数学与计算科学学院,湖南湘潭411201 |
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| 摘 要： | 利用排列的性质，从超几何分布的定义出发，针对服从超几何分布的随机变量，给出直接计算其数学期望和方差的一种方法．
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| 关 键 词： | 超几何分布 数学期望 方差 |
Calculate Mathematical Expectation and Variance of Hypergeometric Distribution Directly |
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| KUANG Neng,Hui.Calculate Mathematical Expectation and Variance of Hypergeometric Distribution Directly[J].Studies In College Mathematics,2010,13(4):73-74. |
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| Authors: | KUANG Neng Hui |
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| Institution: | (School of Mathematics and Computing Science, Hunan University of Science and Technology, Xiangtan, Htman 411201, PRC) |
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| Abstract: | Based on the properties of permutation and the definition of hypergeometric distribution, the mathematical expectation and variance of hypergeometric distribution can be calculated directly. |
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| Keywords: | hypergeometric distribution mathematical expectation variance |
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