# Difference between revisions of "Documentation/How Tos/Calc: NEGBINOMDIST function"

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* [[Documentation/How_Tos/Calc: BINOMDIST function|BINOMDIST]] | * [[Documentation/How_Tos/Calc: BINOMDIST function|BINOMDIST]] | ||

## Latest revision as of 08:20, 17 July 2018

CALC FUNCTIONS

Measures of Central Tendency

Measures of dispersion / spread

Probability and statistics

Correlation and line fitting

*See also (in the Array Function category); GROWTH, LINEST, LOGEST, TREND*

Ranking

## Contents

## NEGBINOMDIST

Calculates probabilities for a negative binomial distribution.

### Syntax:

**NEGBINOMDIST(x; r; p)**

- For independent trials each with a probability
of success,**p**returns the probability that there will be exactly**NEGBINOMDIST**failures before there have been**x**successes. The formula used is:**r**

### Example:

**NEGBINOMDIST(1; 1; 0.5)**

- returns 0.25 (25%), the probability that heads will come up exactly once before tails has come up when tossing a coin.

**See Also**