It's the distribution usually governing traffic patterns and radioactive decays, but as the average number of events increases it becomes a Gaussian.  
It's equivalent to the binomial distribution when the average number of events is small and the possible number large.  It's the distribution usually governing traffic patterns and radioactive decays, but as the average number of events increases it becomes a Gaussian.  For ten points, what probability distribution is named for its French discoverer?
It's equivalent to the binomial distribution when the average number of events is small and the possible number large.  
Poisson distribution