BINOM.DIST Function

Calculates the binomial distribution probability for the number of successes from a specified number of trials

Calculate Binomial Distribution in Excel

The BINOM.DIST function is categorized under Statistical functions and will calculate the binomial distribution probability for the number of successes from a specified number of trials. This binomial distribution Excel guide will show you have to use the function step by step.

The binomial distribution is a statistical measure that is frequently used to indicate the probability of a specific number of successes occurring from a specific number of independent trials. The two forms used are:

  • The Probability Mass Function – Calculates the probability of there being exactly x successes from n independent trials
  • The Cumulative Distribution Function – Calculates the probability of there being at most x successes from in independent trials

In financial analysis, the BINOM.DIST function can be useful in finding out the probability of publishing a best-selling book from range of books to be published by a company.

Introduced in Excel 2010, BINOM.DIST function is an updated version of the BINOMDIST function.

 

Formula

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

 

The BINOM.DIST uses the following arguments:

  1. Number_s (required argument) It is the number of successes in trials.
  2. Trials (required argument) It is the number of independent trials. It must be greater than or equal to 0.
  3. Probability_s (required argument) It is the probability of success in each trial.
  4. Cumulative (required argument) It is a logical value that determines the form of the function. It can either be:
    1. TRUE – Uses the cumulative distribution function.
    2. FALSE – Uses the probability mass function.

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How to use the BINOM.DIST Function in Excel?       

To understand the uses of the BINOM.DIST function, let us consider an example:

 

Example

Suppose we are given the following data:

 

Binomial Distribution Excel - Example 1

 

 

The formula for calculating binomial distribution using cumulative distribution function is shown below:

 

BINOM.DIST - Example 1

 

We get the result below:

 

BINOM.DIST - Example 1a

 

The formula for calculating binomial distribution using probability mass function is shown below:

 

BINOM.DIST - Example 1b

 

We get the result below:

 

BINOM.DIST - Example 1d

 

Few notes about the BINOM.DIST function

  1. The BINOM.DIST function will truncate all numerical values to Integer.
  2. #VALUE! error – Occurs when any of the arguments provided is non-numeric.
  3. #NUM! error – Occurs when:
    1. The given probability is less than zero or greater than 1.
    2. The given number_s is less than zero or greater than the trials.

 

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Additional resources

Thanks for reading CFI’s guide to binomial distribution Excel! By taking the time to learn and master these functions, you’ll significantly speed up your financial analysis. To learn more, check out these additional resources:

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