Difference between revisions of "Exponential distribution/Definition"
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** {{M|f:x\mapsto \lambda e^{-\lambda x} }}, from this we can obtain: | ** {{M|f:x\mapsto \lambda e^{-\lambda x} }}, from this we can obtain: | ||
* the [[cumulative distribution function]], {{M|F:\mathbb{R}_{\ge 0}\rightarrow[0,1]\subseteq\mathbb{R} }}, which is: | * the [[cumulative distribution function]], {{M|F:\mathbb{R}_{\ge 0}\rightarrow[0,1]\subseteq\mathbb{R} }}, which is: | ||
− | ** {{M|F:x\mapsto 1-e^{\lambda x} }} | + | ** {{M|F:x\mapsto 1-e^{-\lambda x} }} |
*** The proof of this is '''claim 1''' {{#if:{{{home|}}}|below|on the [[exponential distribution]] page}} | *** The proof of this is '''claim 1''' {{#if:{{{home|}}}|below|on the [[exponential distribution]] page}} | ||
Latest revision as of 01:27, 16 March 2018
Grade: B
This page requires references, it is on a to-do list for being expanded with them.
Please note that this does not mean the content is unreliable, it just means that the author of the page doesn't have a book to hand, or remember the book to find it, which would have been a suitable reference.
The message provided is:
The message provided is:
use Rice's P book. Page 48
Contents
[hide]Using this page
Set home to something when using this page to change the "the proof of this is claim 1 message"
Definition
Let λ∈R≥0 be given, and let X∼Exp(λ) be an exponentially distributed random variable. Then:
- the probability density function, f:R≥0→R≥0 is given as follows:
- f:x↦λe−λx, from this we can obtain:
- the cumulative distribution function, F:R≥0→[0,1]⊆R, which is:
- F:x↦1−e−λx
- The proof of this is claim 1 on the exponential distribution page
- F:x↦1−e−λx
The exponential distribution has the memoryless property[Note 1]
Notes
- Jump up ↑ Furthermore, the memoryless property characterises the exponential distribution, that is a distribution has the memoryless property if and only if it is a member of the exponential distribution family, i.e. an exponential distribution for some λ∈R>0
References