| 独立随机变量之和的概率密度求解难点及对策 |
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| 引用本文： | 陈淑敏,魏雪丽.独立随机变量之和的概率密度求解难点及对策[J].天津理工大学学报,1998(4). |
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| 作者姓名： | 陈淑敏 魏雪丽 |
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| 作者单位： | 天津理工学院基础科学部!300191 |
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| 摘 要： | 介绍了两个相互独立的连续型随机变量之和的概率密度的计算难点及求解对策．提出一种用于计算概率密度的方法．该方法直观自然、计算方便快捷、准确、易于掌握．消除了直接计算时被积函数解析式难以准确确定的麻烦．
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| 关 键 词： | 相互独立 随机变量 概率密度（函数） |
The Difficulty and Countermeasure for Solving the Probability Density Function of the Sum of Two Independent Continuous Type Random Variable |
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| Chen Shumin,Wei Xueli.The Difficulty and Countermeasure for Solving the Probability Density Function of the Sum of Two Independent Continuous Type Random Variable[J].Journal of Tianjin University of Technology,1998(4). |
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| Authors: | Chen Shumin Wei Xueli |
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| Abstract: | In this paper, the difficulty and contermeasure for solving the probability density function of the sum of two independent continuous type random variable is presented, and a new computing method -graphical method is given. The graphical method is very natural, easy to calculate and accurate. It diminated the difficulty for integrand to be determined when calculated directly. |
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| Keywords: | independent random variable probability density function |
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