# Difference between revisions of "InverseLogNormal Command"

From GeoGebra Manual

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{{command|probability}} | {{command|probability}} | ||

;InverseLogNormal[ <Mean μ>, <Standard Devation σ>, <Probability p> ] | ;InverseLogNormal[ <Mean μ>, <Standard Devation σ>, <Probability p> ] | ||

− | :Computes the inverse of cumulative distribution function of the [[w:Log-normal_distribution|Log-Normal distribution]] at ''p'', where the Log-Normal distribution is given by mean ''μ'' and standard devation ''σ''. In other words, finds ''t'' such that ''P(X≤t)=p'', where X is a Log-Normal random variable. Probability ''p'' must be from [0,1]. | + | :Computes the inverse of cumulative distribution function of the [[w:Log-normal_distribution|Log-Normal distribution]] at ''p'', where the Log-Normal distribution is given by mean ''μ'' and standard devation ''σ''. |

+ | :In other words, it finds ''t'' such that ''P(X≤t)=p'', where X is a Log-Normal random variable. Probability ''p'' must be from [0,1]. | ||

+ | |||

+ | : {{Example| 1=<code>InverseLogNormal[100,2,1]</code> computes <math> \infty </math>.}} |

## Revision as of 17:41, 25 June 2012

This page is about a feature that is supported only in GeoGebra 4.2. |

- InverseLogNormal[ <Mean μ>, <Standard Devation σ>, <Probability p> ]
- Computes the inverse of cumulative distribution function of the Log-Normal distribution at
*p*, where the Log-Normal distribution is given by mean*μ*and standard devation*σ*. - In other words, it finds
*t*such that*P(X≤t)=p*, where X is a Log-Normal random variable. Probability*p*must be from [0,1].

**Example:**`InverseLogNormal[100,2,1]`

computes \infty .