Which of the following best describes a Poisson random variable?
A) It is a continuous random variable with infinitely many possible values.
B) It is a discrete random variable with infinitely many possible values.
C) It is a continuous random variable with a finite number of possible values.
D) It is a discrete random variable with a finite number of possible values.

Question

Quizplus · Accepted Answer

A Poisson random variable is a discrete random variable where the number of possible values is infinite, but each value has a finite, non-zero probability of occurring. The Poisson distribution is often used to model the number of events that occur within a fixed interval of time or space, such as the number of calls to a customer service center in a given hour or the number of accidents on a certain stretch of road in a year.

Which of the Following Best Describes a Poisson Random Variable