Returns the probability from a hypergeometric distribution
Category: Probability
See: 'CDF Function' on page 418
PROBHYPR ( N,K,n,x <, r >)
N
is an integer population size parameter, with N ‰ 1.
Range:
K
is an integer number of items in the category of interest parameter.
Range: ‰ K ‰ N
n
is an integer sample size parameter.
Range: ‰ n ‰ N
x
is an integer random variable.
Range: max (0, K + n - N ) ‰ x ‰ min ( K , n )
r
is an optional numeric odds ratio parameter.
Range: r ‰
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.
SAS Statements | Results |
---|---|
x=probhypr(200,50,10,2); | 0.5236734081 |