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| + | #REDIRECT [[F-distribution#CumFDistInv]] |
| [[Category: Analytic Distribution Functions]] | | [[Category: Analytic Distribution Functions]] |
− | [[Category: Distribution Densities library functions]] | + | [[Category:Inverse cumulative probability functions]] |
− | [[Category: Doc Status D]] <!-- For Lumina use, do not change -->
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− | == CumFDistInv(p, dof1, dof2) ==
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− | The inverse cumulative density for the F-distribution with degrees of freedom «dof1» and «dof2». This returns the value <code>x</code> at which the area under the probability density graph falling to the left of <code>x</code> is «p».
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− | The F-distribution is used in classical statistics for hypothesis testing involving the comparison of variances between two samples.
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− | Note that there is no '''FDist''' distribution function built into Analytica. If you want an '''FDist''', just use:
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− | :<code>CumFDistInv(Uniform(0, 1), dof1, dof2)</code>
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− | [[CumFDistInv]] and [[CumFDist]] are inverses, i.e., within the range of the distribution:
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− | :<code>CumFDistInv(CumFDist(x, dof1, dof2), dof1, dof2) → x</code>
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− | == Library ==
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− | [[Distribution Densities Library]] ([[media:Distribution Densities.ana|Distribution Densities.ana]])
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− | :Use [[File menu|File]] → '''Add Library...''' to add this library
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− | == See Also ==
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− | * [[Dens_FDist]]
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− | * [[CumFDist]]
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− | * [[ChiSquared]]
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− | * [[Distribution Densities Library]]
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− | * [[media:Distribution Densities.ana|Distribution Densities.ana]]
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− | * [https://en.wikipedia.org/wiki/F-distribution F-distribution] -- a Wikipedia article
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