二项分布直接来源于伯努利试验,它是相互独立事件重复试验的概率分布.二项分布是概率论中3个最重要的概率分布之一.广泛应用于抽样检查,在概率论的理论研究和实际应用中都有很重要的地位.在最近几年高考中,有关二项分布的试题也时有出现.1二项分布的概念一般地,由n次试验构成, The binomial distribution comes directly from the Bernoulli test, which is a probability distribution of repeated trials of mutually independent events. The binomial distribution is one of the three most important probability distributions in probability theory. It is widely used in sampling inspections, in theory of probability theory. Both research and practical application have a very important position. In the recent college entrance examinations, questions related to binomial distribution have also appeared from time to time.1 The concept of binomial distribution is generally composed of n trials.