**Excel BINOM.DIST() function**

## Description

The BINOM.DIST() function is used to getg the individual term binomial distribution probability.

Use BINOM.DIST in problems with a fixed number of tests or trials, when the outcomes of any trial are only success or failure, when trials are independent, and when the probability of success is constant throughout the experiment.

For example, BINOM.DIST can calculate the probability that two of the next three babies born are male.

**Version**: Excel 2013

**Syntax**

BINOM.DIST(number_s,trials,probability_s,cumulative)

**Parameters**

Name | Description | Data Type | Required/ Optional |
---|---|---|---|

Number_s | The number of successes in trials. | number | Required |

Trials | The number of independent trials. | number | Required |

Probability_s | The probability of success on each trial. | number | Required |

Cumulative |
A logical value that determines the form of the function. |
boolean | Required |

**Remarks **:

- Number_s and trials are truncated to integers.
- If number_s, trials, or probability_s is nonnumeric, BINOM.DIST returns the #VALUE! error value.
- If number_s < 0 or number_s > trials, BINOM.DIST returns the #NUM! error value.
- If probability_s < 0 or probability_s > 1, BINOM.DIST returns the #NUM! error value.
- The binomial probability mass function is :
where :

is COMBIN(n,x).

The cumulative binomial distribution is :

**Example** : Excel BINOM.DIST() function

In the following worksheet probability of exactly 3 of 7 trials being successful.

Sample Data | Description |
---|---|

3 | Number of successes in trials |

7 | Number of independent trials |

0.3 | Probability of success on each trial |

ï»¿ Source:http://www.w3resource.com/excel/excel-binom-dot-dist-function.php