Téori probabilitas: Béda antarrépisi

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Some statisticians will assign probabilities only to events that they think of as random, according to their relative frequencies of occurrence, or to subsets of populations as proportions of the whole; those are '''frequentists'''. Others assign probabilities to propositions that are uncertain according either to [[personal probability|subjective]] degrees of belief in their truth, or to logically justifiable degrees of belief in their truth. Such persons are [[Bayesian probability|Bayesians]]. A Bayesian may assign a probability to the proposition that there was life on Mars a billion years ago, since that is uncertain; a frequentist would not assign such a probability, since it is not a random event that has a long-run relative frequency of occurrence.
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