density function

density function

In statistics, a function whose integral is calculated to find probabilities associated with a continuous random variable (see continuity, probability theory). Its graph is a curve above the horizontal axis that defines a total area, between itself and the axis, of 1. The percentage of this area included between any two values coincides with the probability that the outcome of an observation described by the density function falls between those values. Every random variable is associated with a density function (e.g., a variable with a normal distribution is described by a bell curve).

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density function [′den·səd·ē ‚fəŋk·shən]

(mathematics)

A density function for a measuremis a function which gives rise tomwhen it is integrated with respect to some other specified measure.

(statistics)

probability density function.