Jump to navigation Jump to search “Random” redirects here. For a random Wikipedia article, see Special:Random. For information about Wikipedia’s random article feature, see Wikipedia:Random assignment in research. Randomness is the lack of pattern or predictability in events.
The fields of mathematics, probability, and statistics use formal definitions of randomness. In statistics, a random variable is an assignment of a numerical value to each possible outcome of an event space. This association facilitates the identification and the calculation of probabilities of the events. Random variables can appear in random sequences. Randomness is most often used in statistics to signify well-defined statistical properties.