probability

Also known as probability of an event

thumb|250px|The probabilities of rolling several numbers using two dice

AI overview

Probability is a way of measuring how likely something is to happen, expressed as a number between 0 (impossible) and 1 (certain). It matters because it helps us understand uncertainty in everyday situations—from weather forecasts to medical tests to games—and allows us to make better decisions when we don't know what will happen next.

AI-generated from the Wikipedia summary — may contain errors.

Research

2,028,314 papers

The probability of conditionals: A review.Psychonomic bulletin & review · 2022
Probability estimation with machine learning methods for dichotomous and multicategory outcome: theory.Biometrical journal. Biometrische Zeitschrift · 2014
Words or numbers? Communicating probability in intelligence analysis.The American psychologist · 2021
Probability revision.Primary care · 1995
Probability and informed consent.Theoretical medicine and bioethics · 2023

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Wikidata facts

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Commons category: Probability
Stack Exchange tag: poker.stackexchange.com/tags/probability

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~24 min read

Article

18 sections

Contents

Etymology
Interpretations
History
Theory
Applications
Mathematical treatment
Independent events
Mutually exclusive events
Not (necessarily) mutually exclusive events
Conditional probability
Inverse probability
Summary of probabilities
Relation to randomness and probability in quantum mechanics
See also
Notes
References
Bibliography
External links

thumb|250px|The probabilities of rolling several numbers using two dice

Probability concerns events and numerical descriptions of how likely they are to occur. The probability of an event is a number between 0 and 1; the larger the probability, the more likely an event is to occur. This number is often expressed as a percentage (%), ranging from 0% to 100%. A simple example is the tossing of a fair (unbiased) coin. Since the coin is fair, the two outcomes ("heads" and "tails") are both equally probable; the probability of "heads" equals the probability of "tails"; and since no other outcomes are possible, the probability of either "heads" or "tails" is 1/2 (which could also be written as 0.5 or 50%).