摘要
由第r次成功发生的重复独立试验概型给出了负二项分布的定义。对服从负二项分布的随机变量论证了它的数学期望、方差和两种极限分布。
The definition of the negative binomical distribution is given when a probability model of repeated independent trials is to occur for the rth success. The mathematical expectation, variance and two kinds of the limit distrbution of a random variable for obeying the negative binomial distribution are proved.
出处
《鞍山钢铁学院学报》
1992年第2期1-5,共5页
Journal of Anshan Institute of Iron and Steel Technology
关键词
重复独立试验
负二项
极限分布
repeated independent trials, negative binomial, limit distribution
