Biggest of bunch: Gumbel
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Flooding caused by Hurricane Wilma in the Florida Keys
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(Marc Averette, public
domain, from wikipedia.)
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In a world with many random events, one is often not interested in the average
behavior or the sum of the behaviors, but rather in
extreme value statistics: the largest or smallest of a series
of random variables. Engineers planning dike systems are interested in
the highest flood likely in the next hundred years; insurance companies
are interested in the largest fire or hurricane. The probability distribution
of the largest of many independent random variables takes a few
characteristic, universal forms. Here we explore the
Gumbel distribution.
Links
James P. Sethna,
Last modified: August 24, 2006
Statistical Mechanics: Entropy, Order Parameters, and Complexity,
now available at
Oxford University Press
(USA,
Europe).