摘要
本文扩展了混合型随机变量的研究范围,在已有研究基础上,定义了一种混合型随机变量的概率分布律,并给出在此种分布律下数学期望和方差的计算方法.用实例表明了本文方法的有效性.
At present the study of hybrid random variables is mainly for its distribution function and the mathematical expectation.This paper extends research scope of the hybrid random variables.On the basis of existing research,the paper defines a kind of probability distribution law for the hybrid random variable,and studies the method for computing its mean and variance under this law.Examples and applications are also given to make illustrations.
出处
《高等数学研究》
2015年第4期125-126,共2页
Studies in College Mathematics
关键词
混合型随机变量
分布律
数学期望
方差
hybrid random variables
distribution law
mathematical expectation
variance
