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Functions and CALL Routines

PROBNEGB Function



Returns the probability from a negative binomial distribution.
Category: Probability
See: CDF Function

Syntax
Arguments
Details
Examples
See Also

Syntax

PROBNEGB(p,n,m)


Arguments

p

is a numeric probability of success parameter.

Range: 0 [le] p [le] 1
n

is an integer number of successes parameter.

Range: n [ge] 1
m

is a positive integer random variable, the number of failures.

Range: m [ge] 0

Details

The PROBNEGB function returns the probability that an observation from a negative binomial distribution, with probability of success p and number of successes n, is less than or equal to m.

To compute the probability that an observation is equal to a given value m, compute the difference of two probabilities from the negative binomial distribution for m and m-1.


Examples

SAS Statements Results
x=probnegb(0.5,2,1);
0.5


See Also

Functions:

CDF Function

LOGCDF Function

LOGPDF Function

LOGSDF Function

PDF Function

SDF Function

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