Probability distribution function may refer to: *

Probability distribution In probability theory and statistics, a probability distribution is a Function (mathematics), function that gives the probabilities of occurrence of possible events for an Experiment (probability theory), experiment. It is a mathematical descri ...

, a function that gives the probabilities of occurrence of possible outcomes for an experiment **

Probability density function In probability theory, a probability density function (PDF), density function, or density of an absolutely continuous random variable, is a Function (mathematics), function whose value at any given sample (or point) in the sample space (the s ...

, a local differential probability measure for continuous random variables **

Probability mass function In probability and statistics, a probability mass function (sometimes called ''probability function'' or ''frequency function'') is a function that gives the probability that a discrete random variable is exactly equal to some value. Sometimes i ...

(a.k.a. discrete probability distribution function or discrete probability density function), providing the probability of individual outcomes for discrete random variables *

Cumulative distribution function In probability theory and statistics, the cumulative distribution function (CDF) of a real-valued random variable X, or just distribution function of X, evaluated at x, is the probability that X will take a value less than or equal to x. Ever ...

, the cumulative integral of a probability density function or cumulative sum of a probability mass function

See also