| 对随机变量数学期望概念的探讨 |
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| 引用本文： | 刘义梅. 对随机变量数学期望概念的探讨[J]. 首都师范大学学报(自然科学版), 1996, 17(3): 97-99 |
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| 作者姓名： | 刘义梅 |
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| 作者单位： | 首都师范大学数学系 |
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| 摘 要： | 本文证明了在目前的概率教科书中，连续型随机变量的数学期望定义中的条件“积分绝对收敛”可以改为“积分收敛”．
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| 关 键 词： | 随机变量，期望，绝对收敛，收敛，等价 |
A Discussion of the Definition of Expectation of Random Variable |
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| Liu Yimei. A Discussion of the Definition of Expectation of Random Variable[J]. Journal of Capital Normal University(Natural Science Edition), 1996, 17(3): 97-99 |
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| Authors: | Liu Yimei |
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| Abstract: | P (x)is a probability distribution density function. It is proved. that in the definition ofexpectation condition that is absolutely convergent can be changed to the convergence of. |
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| Keywords: | random variable expectation absolutely convergent convergence equivalence. |
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