| 一种判别离散型随机变量相互独立的新方法 |
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| 引用本文： | 张红艳,郝飞龙,李德清.一种判别离散型随机变量相互独立的新方法[J].军械工程学院学报,2011(6):70-72. |
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| 作者姓名： | 张红艳 郝飞龙 李德清 |
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| 作者单位： | 军械工程学院基础部,河北石家庄050003 |
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| 摘 要： | 对两个离散型随机变量相互独立的问题，通过引入分布律矩阵的概念，借助矩阵理论中行向量的相关结论，提出一种新的判别独立的方法。与以往的方法相比，这种方法更为简单和实用，更重要的是具体操作过程中计算量大为减少。
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| 关 键 词： | 二维离散型随机变量 随机变量的独立性 分布律矩阵 |
New Method for Judging the Independence of Two-dimensional Discrete Random Variable |
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| ZHANG Hong-yan,HAO Fei-long,LI De-qing.New Method for Judging the Independence of Two-dimensional Discrete Random Variable[J].Journal of Ordnance Engineering College,2011(6):70-72. |
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| Authors: | ZHANG Hong-yan HAO Fei-long LI De-qing |
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| Institution: | (Department of Basic Courses,Ordnance Engineering College,Shijiazhuang 050003,China) |
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| Abstract: | Using the matrix of distribution law and based on some conclusions of row vector, a new method is provided to judge the independence of two-dimensional discrete random variable. Compared with some other methods, this method is an easy and practical tool for judging the independence of two-dimensional discrete random variables. And a lot of work can be saved in the process of judging the independence. |
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| Keywords: | two-dimensional discrete random variable independence of random variables matrix of distribution law |
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