# NEGBINOM.DIST

## 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