# GAMMAINV

Spread for WinForms provides advanced software components that support Excel import/export, full cell customization, an extensive calculation engine with over 450 functions and more, all with zero dependencies on Excel.

## Content



This function returns the inverse of the gamma cumulative distribution.

## Syntax

GAMMAINV(*p*,*alpha*,*beta*)

## Arguments

This function has these arguments:

| **Argument** | **Description** |
| -------- | ----------- |
| *p* | Probability |
| *alpha* | Alpha parameter of the distribution |
| *beta* | Beta parameter of the distribution |

## Remarks

This function calculates the inverse of the F probability distribution, so if p = GAMMADIST(x,...), then GAMMAINV(p,...) = x.

## Data Types

Accepts numeric data for all arguments. Returns numeric data.

## Examples

`GAMMAINV(A3,3,4)`
`GAMMAINV(0.8902,R3C8,R3C9)`
`GAMMAINV(0.75,2,3)` gives the result 8.0779035867

## Version Available

This function is available in product version 1.0 or later.

## See Also

[GAMMADIST](/spreadnet/docs/latest/online-formula/formulas-functionsall/formulas-functsDtoG/FunctionGAMMADIST) \| [GAMMALN](/spreadnet/docs/latest/online-formula/formulas-functionsall/formulas-functsDtoG/FunctionGAMMALN) \| [Statistical Functions](/spreadnet/docs/latest/online-formula/formulas-overview/formulas-functs/formulas-functtypes/formulas-functsstats)