摘要
在负二项分布、二项分布以及多项分布基础上提出了负三项分布,并且给出了负三项分布的概念,并求出了它的概率分布、数学期望和方差.
Negative binomial, binomial distribution and muhinomoal distributions are the well known distributions. On the basis of above, introduced the definition of negative tridistributions and given its probability distributions mathematic expectation and variance.
出处
《高师理科学刊》
2007年第5期16-19,共4页
Journal of Science of Teachers＇College and University
关键词
负三项分布
数学期望
方差
negative three distributions
mathnatics expectation
variance
