Documentation/How Tos/Calc: HYPGEOMDIST function

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HYPGEOMDIST

Calculates values for a hypergeometric distribution.

Syntax:

HYPGEOMDIST(x; n; M; N)

The hypergeometric distribution is a discrete probability distribution giving the probability of x successes in a sequence of n draws (without replacement) from a finite population of size N which contains M successes.
HYPGEOMDIST calculates the probability density function of the hypergeometric distribution:
Calc hypgeomdist equation1.png
which is
Calc hypgeomdist equation2.png

Example:

HYPGEOMDIST(2; 3; 3; 6)

returns 0.45. If an urn contains 3 red balls and 3 green balls, the probability that 2 red balls will be selected after 3 draws without replacement is 27/60 = 0.45.

Issues:

  • The forthcoming international standard ODFF adds an extra parameter to this function, allowing the possibility to calculate the cumulative distribution function.



See Also
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