Poisson Distribution

Definition of 'Poisson Distribution'


A statistical distribution showing the frequency probability of specific events when the average probability of a single occurrence is known. The Poisson distribution is a discrete function.

Investopedia explains 'Poisson Distribution'


For example, if the average number of people that rent movies on a friday night at a single video store location is 400, a Poisson distribution can answer such questions as, "What is the probability that more than 600 people will rent movies?" Therefore, application of the Poisson distribution enables managers to introduce optimal scheduling systems. One of the most famous historical practical uses of the Poisson distribution was estimating the annual number of Prussian cavalry soldiers killed due to horse-kicks. Other modern examples include estimating the number of car crashes in a city of a given size; in physiology, this distribution is often used to calculate the probabilistic frequencies of different types of neurotransmitter secretions.



comments powered by Disqus
Hot Definitions
  1. Direct Bidder

    An entity that purchases Treasury securities at auction for a house account rather than on behalf of another party.
  2. Mortgage Modification

    A permanent change in a homeowner's home loan terms that makes the monthly loan payments affordable.
  3. Leveraged Benefits

    The use – by a business owner or professional practitioner – of their company’s receivables or current income to secure a loan whose proceeds then indirectly fund a retirement plan.
  4. Direct Consolidation Loan

    A loan that combines two or more federal education loans into a single loan. A Direct Consolidation Loan allows the borrower to make a single monthly payment. The loan is facilitated by the U.S. Department of Education and does not require borrowers to pay an application fee.
  5. Through Fund

    A type of target-date retirement fund whose asset allocation includes higher risk and potentially higher return investments "through" the fund's target date and beyond.
  6. Last In, First Out - LIFO

    An asset-management and valuation method that assumes that assets produced or acquired last are the ones that are used, sold or disposed of first.
Trading Center