Probability theory

Probability theory is the branch of mathematics concerned with probability.

Central subjects in probability theory include discrete and continuous random variables, probability distributions, and stochastic processes, which provide mathematical abstractions of non-deterministic or uncertain processes or measured quantities that may either be single occurrences or evolve over time in a random fashion.

Although it is not possible to perfectly predict random events, much can be said about their behavior. A major result in probability theory describing such behaviour is the law of large numbers.