Poisson Distribution PDF Calculator
For a Poisson distribution with rate parameter \(\lambda > 0\), the probability mass function is given by: $$ P(X=x)= \frac{\lambda^x\,e^{-\lambda}}{x!},\quad x=0,1,2,\dots $$
* Enter a nonnegative integer \(x\) and a rate \(\lambda\).
Step 1: Enter Parameters
e.g., 3
e.g., 2