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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Empirical probability ： ウィキペディア英語版 Empirical probability The empirical probability, also known as relative frequency, or experimental probability, is the ratio of the number of outcomes in which a specified event occurs to the total number of trials,〔(Empirical probability at answers.com )〕 not in a theoretical sample space but in an actual experiment. In a more general sense, empirical probability estimates probabilities from experience and observation.〔(Empirical probabilities at tpub.com )〕 Given an event, A, in a sample space, the relative frequency of A is the ratio of m/n. m being the number of outcomes favourable to the occurrence of A; n being the total number of outcomes of an experiment. In statistical terms, the empirical probability is an ''estimate'' or estimator of a probability. In simple cases, where the result of a trial only determines whether or not the specified event has occurred, modelling using a binomial distribution might be appropriate and then the empirical estimate is the maximum likelihood estimate. It is the Bayesian estimate for the same case if certain assumptions are made for the prior distribution of the probability. If a trial yields more information, the empirical probability can be improved on by adopting further assumptions in the form of a statistical model: if such a model is fitted, it can be used to derive an estimate of the probability of the specified event. ==Advantages and disadvantages== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Empirical probability」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.