【摘要】 超几何分布、二项分布、普阿松分布、正态分布是概率论中几种重要的分布函数 ,这 4种概率分布之间存在着一定的联系。给出了它们之间的关系 ,并进行证明 ,同时指出了它们在实际问题中的应用更多还原

【Abstract】 Super geomentry distribution, Binominal distribution, Poission distribution and Normal distribution are important distribution functions in probability theory. The paper has discussed some problems about the relations armong them. A part of proofs are given to show what the limit distribution of three distribution are. What’s more, the paper has pointed out the usage of them.更多还原