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单词 beta-binomial distribution
释义
beta-binomial distribution

Statistics
  • A compound distribution that results from allowing the success probability in a sequence of Bernoulli trials to have a beta distribution. If the parameters of that distribution are α and β, then the probability of obtaining r successes in n trials is given by the beta-binomial distribution asbeta-binomial distributionwhere B is the beta function.

    The distribution has mean np and variancebeta-binomial distributionwherebeta-binomial distribution


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