Poissont - rFronteddu/general_wiki GitHub Wiki
X ~ Po(λ) = "Variable X follows a Poisson distribution with lambda equals to 4."
Po is used to characterize the frequency with which an event occurs within a specific interval. λ is the number of repetitions.
Example: If we know a fly lands 3 times in 10 seconds, we can use Po to determine the likelihood that it lands 8 times in 20 seconds.
Observation: Po stars from 0 because no event can happen a negative number of times. mu and sigma squared are both equal to λ