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distribuição exponencial

File:Exponential_distribution_pdf_-_public_domain.svg · Wikimedia Commons · See Wikimedia Commons

EntityQ237193· pop 41· linked from 481 articles

distribuição exponencial

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Also known as lifetime distribution

probability distribution

In the Vinony graph

Vinony's link graph records 481 inbound references to distribuição exponencial, and connects out to confidence interval, continuous uniform distribution and distribution function.

It sits within the topics Conjugate prior distributions, Continuous distributions and Exponential family distributions.

Vinony links it to 40 Wikipedia language editions.

Key facts

Parameters
0,"}}'> λ > 0 , {\displaystyle \lambda >0,} rate, or inverse scale
Support
x ∈ [ 0 , ∞ ) {\displaystyle x\in [0,\infty )}
Pdf
λ e − λ x {\displaystyle \lambda e^{-\lambda x}}
Cdf
1 − e − λ x {\displaystyle 1-e^{-\lambda x}}
Quantile
− ln ⁡ ( 1 − p ) λ {\displaystyle -{\frac {\ln(1-p)}{\lambda }}}
Mean
1 λ {\displaystyle {\frac {1}{\lambda }}}
Median
ln ⁡ 2 λ {\displaystyle {\frac {\ln 2}{\lambda }}}
Mode
0 {\displaystyle 0}
Variance
1 λ 2 {\displaystyle {\frac {1}{\lambda ^{2}}}}
Skewness
2 {\displaystyle 2}
Excess kurtosis
6 {\displaystyle 6}
Entropy
1 − ln ⁡ λ {\displaystyle 1-\ln \lambda }
Mgf
λ λ − t , for t < λ {\displaystyle {\frac {\lambda }{\lambda -t}},{\text{ for }}t<\lambda }
Cf
λ λ − i t {\displaystyle {\frac {\lambda }{\lambda -it}}}
Fisher information
1 λ 2 {\displaystyle {\frac {1}{\lambda ^{2}}}}
Kullback leibler divergence
ln ⁡ λ 0 λ + λ λ 0 − 1 {\displaystyle \ln {\frac {\lambda _{0}}{\lambda }}+{\frac {\lambda }{\lambda _{0}}}-1}

via Wikipedia infobox

Wikidata facts

Image
Exponential distribution cdf - public domain.svg
Show 5 more facts
Commons category
Exponential distribution
has characteristic
memorylessness
on focus list of Wikimedia project
Wikipedia:Vital articles/Level/4
maintained by WikiProject
WikiProject Mathematics
Sources (4)

via Wikidata · CC0

Article · Português

A distribuição exponencial é um tipo de distribuição contínua de probabilidade, representada por um parâmetro . Sua função de densidade pode ser expressa por: Repare que existe uma família de distribuições exponenciais (e não apenas uma) - cada uma com um (parâmetro lambda) diferente. E sua função acumulada:

Abstract from DBpedia / Wikipedia · CC BY-SA

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