# NEGBINOM.DIST

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 negative binomial distribution.

## Syntax

NEGBINOM.DIST(*x*,*r*,*p,cumulative*)

## Arguments

This function has these arguments:

| **Argument** | **Description** |
| -------- | ----------- |
| *x* | An integer representing the number of failures in trials |
| *r* | An integer representing the threshold number of successes |
| *p* | Probability of success on each trial A number between 0 and 1 |
| *cumulative* | A logical value that determines the form of the function. If cumulative is TRUE, this function returns the cumulative distribution function; if FALSE, it returns the probability density function |

## Remarks

The number of successes is fixed and the number of trials is variable. If *p* is less than 0 or greater than 1, the function returns the #NUM! error value. If *x* is less than 0 an error is returned. If *r* is less than 1 an error is returned.

## Data Types

Accepts numeric data for all arguments. Returns numeric data.

## Examples

`NEGBINOM.DIST(B1,C15,0.335,TRUE)`
`NEGBINOM.DIST(R1C2,R15C3,0.75,TRUE)`
`NEGBINOM.DIST(4,13,0.85,TRUE)` gives the result 0.9012900017858557

## Version Available

This function is available in Spread for Windows Forms 11.0 or later.

## See Also

[NEGBINOMDIST](/spreadnet/docs/latest/online-formula/formulas-functionsall/formulas-functsMtoQ/FunctionNEGBINOMDIST)