﻿ HYPGEOMDIST function

# HYPGEOMDIST function

Returns the hypergeometric distribution. HYPGEOMDIST returns the probability of a given number of sample successes, given the sample size, population successes, and population size. Use HYPGEOMDIST for problems with a finite population, where each observation is either a success or a failure, and where each subset of a given size is chosen with equal likelihood.

Syntax

HYPGEOMDIST(sample_s,number_sample,population_s,number_population)

Sample_s     is the number of successes in the sample.

Number_sample     is the size of the sample.

Population_s     is the number of successes in the population.

Number_population     is the population size.

Remarks

• All arguments are truncated to integers.

• If any argument is nonnumeric, HYPGEOMDIST returns the #VALUE! error value.

• If sample_s < 0 or sample_s is greater than the lesser of number_sample or population_s, HYPGEOMDIST returns the #NUM! error value.

• If sample_s is less than the larger of 0 or (number_sample - number_population + population_s), HYPGEOMDIST returns the #NUM! error value.

• If number_sample ≤ 0 or number_sample > number_population, HYPGEOMDIST returns the #NUM! error value.

• If population_s ≤ 0 or population_s > number_population, HYPGEOMDIST returns the #NUM! error value.

• If number_population ≤ 0, HYPGEOMDIST returns the #NUM! error value.

• The equation for the hypergeometric distribution is:

where:

x = sample_s

n = number_sample

M = population_s

N = number_population

HYPGEOMDIST is used in sampling without replacement from a finite population.

Example

A sampler of chocolates contains 20 pieces. Eight pieces are caramels, and the remaining 12 are nuts. If a person selects 4 pieces at random, the following function returns the probability that exactly 1 piece is a caramel.

The example may be easier to understand if you copy it to a blank worksheet.

How to copy an example

1. Create a blank workbook or worksheet.

2. Select the example in the Help topic.

Note   Do not select the row or column headers.

Selecting an example from Help

3. Press CTRL+C.

4. In the worksheet, select cell A1, and press CTRL+V.

5. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.

 1 2 3 4 5
 A B Data Description 1 Number of successes in the sample 4 Sample size 8 Number of successes in the population 20 Population size Formula Description (Result) =HYPGEOMDIST(A2,A3,A4,A5) Hypergeometric distribution for sample and population above (0.363261)

Applies To: Excel 2007

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