poisson distribution

Poisson Distribution is basically a way to predict how many times something might happen in a given period of time, like how many times it might rain in a week or how many times you might get an A in school this year. To figure out how many times something might happen, you can use the Poisson Distribution formula. In the formula, you put in two numbers. The first number is how many times something "usually" happens, like the average number of A's you get in school. The second number is a time, like one school semester. Then the Poisson Distribution tells you how many times you can expect to see that event happen during the semester.