Probability distribution function may refer to:
Probability distribution, a function that gives the probabilities of occurrence of possible outcomes for an experiment Probability density function, a local differential probability measure for continuous random variables Probability mass function (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, the cumulative integral of a probability density function or cumulative sum of a probability mass function
See also Frequency (statistics) Probability measure Probability function (disambiguation)