Poisson distribution

noun Pois·son distribution \ pwä-ˈsōⁿ- \
Updated on: 15 Nov 2017

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 has the form {latex}f(x) = \frac{e^{-\mu}}{\mu^{x}{x!}}{/latex} where μ is the mean and x takes on nonnegative integral values

Origin and Etymology of poisson distribution

Siméon D. Poisson †1840 French mathematician


Learn More about poisson distribution


Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

marked by intense feeling

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!