Poisson distribution


Pois·son distribution

noun \pwä-ˈsōⁿ-\

Definition of POISSON DISTRIBUTION

:  a probability density function that is often used as a mathematical model of the number of outcomes obtained in a suitable interval of time and space, that has its mean equal to its variance, that is used as an approximation to the binomial distribution, and that for nonnegative integral values of x has the form of a fraction whose numerator consists of the product of two factors of which the first is the transcendental number e raised to an exponent equal to minus the mean and the second consists of the mean raised to the exponent x and whose denominator is x!

Origin of POISSON DISTRIBUTION

Siméon D. Poisson †1840 French mathematician
First Known Use: 1922

Browse

Next Word in the Dictionary: Poisson's ratio
Previous Word in the Dictionary: poisson bleu
All Words Near: Poisson distribution

Seen & Heard

What made you want to look up Poisson distribution? Please tell us where you read or heard it (including the quote, if possible).

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More