摘要
该文通过建立负二项分布的模型,讨论负二项分布的数字特征及相对于几何分布随机变量的条件概率的封闭性。
This paper builds the mode of pascal distribution and discusses its mathematical expectation, variance and the closed of conditional probability.
出处
《鄂州大学学报》
2006年第3期56-57,共2页
Journal of Ezhou University
关键词
负二项分布
数学期望
方差
条件概率
Pascal Distribution
mathematical expectation
variance
conditional probability