BUILT-IN MATHEMATICA SYMBOL

# InverseChiSquareDistribution

represents an inverse distribution with degrees of freedom.

represents a scaled inverse distribution with degrees of freedom and scale .

## DetailsDetails

• The inverse distribution is the distribution followed by the inverse of a -distributed random variable with degrees of freedom.
• The quantity follows a scaled inverse distribution where follows a distribution with degrees of freedom. »
• The inverse distribution is commonly used in normal models for Bayesian data analysis.
• InverseChiSquareDistribution allows and to be any positive real numbers.
• InverseChiSquareDistribution can be used with such functions as Mean, CDF, and RandomVariate.

## ExamplesExamplesopen allclose all

### Basic Examples (4)Basic Examples (4)

Probability density function:

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For scaled inverse distribution:

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Cumulative distribution function:

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For scaled inverse distribution:

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Mean and variance:

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Median:

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