Mathematical probability | Wikipedia audio article
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- Опубліковано 20 жов 2024
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00:00:19 1 History of probability
00:00:39 2 Treatment
00:00:59 2.1 Motivation
00:01:19 2.2 Discrete probability distributions
00:01:49 2.3 Continuous probability distributions
00:02:29 2.4 Measure-theoretic probability theory
00:03:08 3 Classical probability distributions
00:03:28 4 Convergence of random variables
00:04:08 4.1 Law of large numbers
00:04:48 4.2 Central limit theorem
00:05:08 5 See also
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SUMMARY
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Probability theory is the branch of mathematics concerned with probability. Although there are several different probability interpretations, probability theory treats the concept in a rigorous mathematical manner by expressing it through a set of axioms. Typically these axioms formalise probability in terms of a probability space, which assigns a measure taking values between 0 and 1, termed the probability measure, to a set of outcomes called the sample space. Any specified subset of these outcomes is called an event.
Central subjects in probability theory include discrete and continuous random variables, probability distributions, and stochastic processes, which provide mathematical abstractions of non-deterministic or uncertain processes or measured quantities that may either be single occurrences or evolve over time in a random fashion.
Although it is not possible to perfectly predict random events, much can be said about their behavior. Two major results in probability theory describing such behaviour are the law of large numbers and the central limit theorem.
As a mathematical foundation for statistics, probability theory is essential to many human activities that involve quantitative analysis of data. Methods of probability theory also apply to descriptions of complex systems given only partial knowledge of their state, as in statistical mechanics. A great discovery of twentieth-century physics was the probabilistic nature of physical phenomena at atomic scales, described in quantum mechanics.