# probability theory

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## probability theory

*n.*

The branch of mathematics that studies the likelihood of occurrence of random events in order to predict the behavior of defined systems.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

## probabil′ity the`ory

*n.*

the theory of analyzing and making mathematical statements concerning the probability of the occurrence of uncertain events.

[1830–40]

Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

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Noun | 1. | probability theory - the branch of applied mathematics that deals with probabilitiesapplied math, applied mathematics - the branches of mathematics that are involved in the study of the physical or biological or sociological world statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters binomial theorem - a theorem giving the expansion of a binomial raised to a given power |

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