Probability Calculator
Category: StatisticsProbability of Two Events
This calculator works out the probabilities of union, intersection, and other outcomes involving two independent events A and B.
Restrictions: Please key in values between 0 and 1 for both P(A) and P(B).
Probability Solver for Two Events
This calculator works out missing probabilities when two independent events A and B are partially defined (e.g., given P(A) and P(A∩B)).
Restrictions: Please key in values between 0 and 1 for P(A) and P(A∩B). Make sure P(A∩B) ≤ P(A).
Probability of a Series of Independent Events
This calculator works out probabilities for independent events repeated multiple times, such as the chance of success or failure over a sequence of trials.
Restrictions: Please key in values between 0 and 1 for probabilities and positive integers for repeat times.
Probability of a Normal Distribution
This calculator works out the probability of a random variable falling within a specified range under a normal distribution.
Restrictions: The standard deviation (σ) must be greater than 0. The left bound must be less than or equal to the right bound.