PROBHYPR Function

Returns the probability from a hypergeometric distribution.

Category: Probability
See: CDF Function, PDF Function

Syntax

PROBHYPR(N,K,n,x<,r> )

Required Arguments

N

is an integer population size parameter.

Range N ≥ 1

K

is an integer number of items in the category of interest parameter.

Range 0 ≤ K ≤ N

n

is an integer sample size parameter.

Range 0 ≤ n ≤ N

x

is an integer random variable.

Range max(0, K + n−N) ≤ x ≤ min(K,n)

Optional Argument

r

is an optional numeric odds ratio parameter.

Range r ≥ 0

Details

The PROBHYPR function returns the probability that an observation from an extended hypergeometric distribution, with population size N, number of items K, sample size n, and odds ratio r, is less than or equal to x. If the optional parameter r is not specified or is set to 1, the value returned is from the usual hypergeometric distribution.

Example

The following SAS statement produces this result.
SAS Statement
Result 
x=probhypr(200,50,10,2);
 
0.5236734081

See Also

Functions:
CDF Function
LOGCDF Function
LOGPDF Function
LOGSDF Function
PDF Function
SDF Function
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