PROBNEGB

PROBNEGB

Returns the probability from a negative binomial distribution

Category: Probability

See: CDF

Syntax
Arguments
Details
Examples

Syntax

PROBNEGB(p,n,m)

Arguments

p

is a numeric probability of success parameter.

Range:

n

is an integer number of successes parameter.

Range:

m

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

Range:

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

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

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