Random variable: Difference between revisions

Revision as of 02:16, 20 June 2004

Revision as of 21:05, 1 July 2004

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[[de:Zufallsvariable]]

[[fr:Variable aléatoire]]

[[it:variabile casuale]]

[[nl:stochastische variabele]]

[[pl:Zmienna losowa]]

[[sv:stokastisk variabel]]

A '''random variable''' can be thought of as the numeric result of operating a non-deterministic mechanism or performing a non-deterministic experiment to generate a [[random]] result. For example, rolling a die and recording the outcome yields a random variable with range { 1, 2, 3, 4, 5, 6 }. Picking a random person and measuring their height yields another random variable.

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There are saveral different senses in which random variables can be considered to be equivalent. Two random variables can be equal, equal almost surely, equal in mean, or equal in distribution.

In increasing order of strenghtstrength, the precise definition of these notions of equivalence is:

==== Equality in distribution ====

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See also: [[discrete random variable]], [[continuous random variable]], [[probability distribution]], [[randomness]], [[random vector]], [[random function]], [[generating function]]

[[de:Zufallsvariable]]

[[fr:Variable aléatoire]]

[[it:variabile casuale]]

[[nl:stochastische variabele]]

[[pl:Zmienna losowa]]

[[sv:stokastisk variabel]]