| 计算数学期望和概率的条件化方法 |
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| 引用本文： | 朱福国. 计算数学期望和概率的条件化方法[J]. 高等数学研究, 2010, 13(4): 71-73 |
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| 作者姓名： | 朱福国 |
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| 作者单位： | 河西学院数学系,甘肃张掖734000 |
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| 摘 要： | 借助于条件数学期望和随机事件A的示性函数IA,通过对随机变量的适当"条件化"处理,应用全期望公式和推广的全概率公式,讨论了计算数学期望和概率的条件化方法.
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| 关 键 词： | 随机变量 示性函数 条件数学期望 全期望公式 全概率公式 |
A Conditioning Way of Calculating Expectation and Probability |
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| ZHU Fu,Guo. A Conditioning Way of Calculating Expectation and Probability[J]. Studies In College Mathematics, 2010, 13(4): 71-73 |
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| Authors: | ZHU Fu Guo |
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| Affiliation: | (Department of Mathematics, Hexi University, Zhangye, Gansu 734000, PRC) |
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| Abstract: | Based on conditional expectation and indicative function IA of random event A, with the formula of total expectation, the extended formula of total probability, and the properly translated random variable, the method of calculating expectation and probability is conditioned. Examples show how the new method work. |
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| Keywords: | random variable conditional expectation the formula of total expectation theformula of total probability. |
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