关于二维连续型随机变量独立性的判断

On the Judgement of the Independencce of Two-dimentional Continuous Stockastic Variable

随机变量的独立性是概率论中最基本的概念之一，通过对它的研究可使一些实际问题的概率模型的具体计算得到简化。因而，关于随机变量的独立性的研究构成了概率的重要课题。本文仅就二维连续型随机变量，给出了两种判断其分量独立性的理论和具体方法，并对其进行了比较。

The independence of stochastic variable is one of the basic concepts inprobability. In studying it some pecticla problems in the concrete calculation of probability models can ie simplified. So it is the important subject in probability to study the independence of stochastic variable. The article gives two kinds of judgements on the theory of subcapecity independence and concrete method and compares them with two-dimentional continuous stochastic variable.