This calculator helps you find the individual and cumulative Poisson probabilities from a given random variable (x) and the average rate of success (μ).
You need to enter a value in the two textboxes below and hit the ‘Calculate’ button:
P(X = 4) = 0.09123
P(X < 4) = 0.08177
P(X ≤ 4) = 0.17299
P(X > 4) = 0.82701
P(X ≥ 4) = 0.91823