In statistics, a Poisson distribution is a probability distribution that is used to show how many times an event is likely to occur over a specified period. ... Poisson distributions are often used to understand independent events that occur at a constant rate within a given interval of time.

Why do we use Poisson distribution?

In statistics, a Poisson distribution is a probability distribution that is used to show how many times an event is likely to occur over a specified period. ... Poisson distributions are often used to understand independent events that occur at a constant rate within a given interval of time.

Under what conditions is Poisson distribution?

Conditions for Poisson Distribution:

The rate of occurrence is constant; that is, the rate does not change based on time. The probability of an event occurring is proportional to the length of the time period.