节点文献
对随机变量数学期望概念的探讨
A Discussion of the Definition of Expectation of Random Variable
【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”.
【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.
【关键词】 随机变量;
期望;
绝对收敛;
收敛;
等价;
【Key words】 random variable; expectation; absolutely convergent; convergence; equivalence.;
【Key words】 random variable; expectation; absolutely convergent; convergence; equivalence.;
- 【文献出处】 首都师范大学学报(自然科学版) ,JOURNAL OF CAPITAL NORMAL UNIVERSITY(NATURAL SCIENCE EDITION) , 编辑部邮箱 ,1996年03期
- 【分类号】O211.67
- 【被引频次】1
- 【下载频次】349