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词汇 Negative binomial distribution
分类 英语词汇 英语翻译词典
释义

Negative binomial distribution

中文百科

负二项分布

负二项分布是统计学上一种离散概率分布。“负二项分布”与“二项分布”的区别在于:“二项分布”是固定试验总次数N的独立试验中,成功次数k的分布;而“负二项分布”是所有到成功r次时即终止的独立试验中,失败次数k的分布。

英语百科

Negative binomial distribution 负二项分布

In probability theory and statistics, the negative binomial distribution is a discrete probability distribution of the number of successes in a sequence of independent and identically distributed Bernoulli trials before a specified (non-random) number of failures (denoted r) occurs. For example, if we define a "1" as failure, all non-"1"s as successes, and we throw a die repeatedly until the third time “1” appears (r = three failures), then the probability distribution of the number of non-“1”s that had appeared will be a negative binomial.

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