Random Variable

Tags

PAS

Cegep/2

Word count

81 words

Reading time

1 minute

Function of sample points to numerical values
Sym. ==$X$, $x$ for concrete value==

Can be the identity function

[!abstract] Support
Set of all possible values of $X$
Sym. $S(X)$

Types

Discrete

Possible values are finitely or infinitely countable

[!example] Sum of two dice rolls

$$\mu =E(X)=\sum xp(x)$$

Continuous

Possible values are uncountable, i.e. can take any value in an interval

$$E(X)={\int }_{-\mathrm{\infty }}^{\mathrm{\infty }}xf(x)\mathrm{d}x$$

Contributors

Ajitani Hifumi

Changelog

Last edited about 2 hours ago

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