probability mass function
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Probability mass function — In probability theory, a probability mass function (abbreviated pmf) is a function that gives the probability that a discrete random variable is exactly equal to some value. A pmf differs from a probability density function (abbreviated pdf) in… … Wikipedia
Probability density function — Boxplot and probability density function of a normal distribution N(0, σ2). In probability theory, a probability density function (pdf), or density of a continuous random variable is a function that describes the relative likelihood for this… … Wikipedia
Probability-generating function — In probability theory, the probability generating function of a discrete random variable is a power series representation (the generating function) of the probability mass function of the random variable. Probability generating functions are… … Wikipedia
Mass function — may refer to: Initial mass function, a function that describes the mass distribution of a population of stars in terms of their initial mass Probability mass function, a function that gives the probability that a discrete random variable is… … Wikipedia
Probability theory — is the branch of mathematics concerned with analysis of random phenomena.[1] The central objects of probability theory are random variables, stochastic processes, and events: mathematical abstractions of non deterministic events or measured… … Wikipedia
Probability distribution — This article is about probability distribution. For generalized functions in mathematical analysis, see Distribution (mathematics). For other uses, see Distribution (disambiguation). In probability theory, a probability mass, probability density … Wikipedia
Probability space — This article is about mathematical term. For the novel, see Probability Space (novel). In probability theory, a probability space or a probability triple is a mathematical construct that models a real world process (or experiment ) consisting of… … Wikipedia
Probability vector — In mathematics and statistics, a probability vector or stochastic vector is a vector with non negative entries that add up to one.The positions (indices) of a probability vector represent the possible outcomes of a discrete random variable, and… … Wikipedia
Notation in probability and statistics — Probability theory and statistics has some commonly used conventions of its own, in addition to standard mathematical notation and mathematical symbols. Contents 1 Probability theory 2 Statistics 3 Critical values … Wikipedia
probability theory — Math., Statistics. the theory of analyzing and making statements concerning the probability of the occurrence of uncertain events. Cf. probability (def. 4). [1830 40] * * * Branch of mathematics that deals with analysis of random events.… … Universalium
