超几何分布与二项分布模型是人教版选修2—3概率问题的重要内容,超几何分布和二项分布有着密切的联系,但也有明显的区别.同学们在学习过程中,有时不能准确辨别所要解决的问题是属于超几何分布还是二项分布.事实上,在超几何分布模型上只要稍作改变,超几何分布就可能变为二项分布.其中超几何分布必须同时满足两个条件:一是抽取的产品不再放回;二是产品数目为有限个.当这两个条件中任何一个发生改变,则不再是超几何分 Hypergeometric distribution and binomial distribution model is an important part of probationary problems in PEP 2. The relationship between hypergeometric distribution and binomial distribution is closely related but there are also obvious differences.The students may sometimes not be accurate in the learning process To identify whether the problem to be solved belongs to the hypergeometric distribution or the binomial distribution. In fact, the hypergeometric distribution may become a binomial distribution with a slight change in the hypergeometric distribution model, in which the hypergeometric distribution must satisfy both conditions : First, the extracted product is no longer put back; Second, the product number is finite. When any one of these two conditions change, it is no longer super geometry