Sample maximum and minimum
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In statistics, the sample maximum and sample minimum, also called the largest observation and smallest observation, are the values of the greatest and least elements of a sample. They are basic summar
Events can be beyond the extreme of any previously observed, as in the 1755 Lisbon earthquake.
Black swan theory
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The black swan theory or theory of black swan events is a metaphor that describes an event that comes as a surprise, has a major effect, and is often inappropriately rationalized after the fact with t
A black swan (Cygnus atratus) in Tasmania, Australia
Two white mute swans (Cygnus olor) in Italy