一类抽球模型中两两(或相互)独立的条件及其模型构建  

Condition of Pair-wise Independence or Mutual Independence in a Random Drawing Balls Model and Constructing Its Models

作　　者：陈均明[1] 

机构地区：[1]重庆工商大学数学与统计学院,重庆400067

出　　处：《大学数学》2013年第1期86-90,共5页College Mathematics

摘　　要：以一类抽球模型中由两两独立不能推出相互独立为基础,导出只由单色球和全色球构成的抽球模型中,抽到的球上的颜色两两独立的充要条件;然后得到并为必然事件的n个随机事件相互独立一个必要条件,并构建抽球模型中抽到的球上的颜色相互独立的球色彩结构.It used a random drawing balls model to explain that pair-wise independent events can＇t be concluded to be mutual independent. Based on it, we got a necessary and sufficient condition of pair-wise independence in the a random drawing balls model which is composed of single-color-balls and all-color-balls. Then it got a necessary condition of mutual independence among n chance events, and built a color structure of balls in which the colors on the balls we randomly selected are mutual independent.

关 键 词：随机事件 抽球模型 两两独立 相互独立 

分 类 号：O211[理学—概率论与数理统计]