PROBABILITYDENSITYFUNCTION

Probability density function

In probability theory, a probability density function, or density of a continuous random variable, is a function that describes the relative likelihood for this random variable to take on a given value. The probability of the random variable falling within a particular range of values is given by the integral of this variable’s density over that range—that is, it is given by the area under the density function but above the horizontal axis and between the lowest and greatest values of the range. The probability density function is nonnegative everywhere, and its integral over the entire space is equal to one.

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probability density function

Noun

  1. Any function whose integral over a set gives the probability that a random variable has a value in that set


The above text is a snippet from Wiktionary: probability density function
and as such is available under the Creative Commons Attribution/Share-Alike License.

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