Download Statistics Toolbox User's Guide

nbinrnd
Purpose
Syntax
nbinrnd
Random matrices from a negative binomial distribution.
RND = nbinrnd(R,P)
RND = nbinrnd(R,P,m)
RND = nbinrnd(R,P,m,n)
Description
RND = nbinrnd(R,P) is a matrix of random numbers chosen from a negative
binomial distribution with parameters R and P. The size of RND is the common
size of R and P if both are matrices. If either parameter is a scalar, the size of
RND is the size of the other parameter.
RND = nbinrnd(R,P,m) generates random numbers with parameters R and P.
m is a 1-by-2 vector that contains the row and column dimensions of RND.
RND = nbinrnd(R,P,m,n) generates random numbers with parameters R and
P. The scalars m and n are the row and column dimensions of RND.
The negative binomial models consecutive trials each having a constant probability, P, of success. The parameter, R, is the number of successes required
before stopping.
Example
Suppose you want to simulate a process that has a defect probability of 0.01.
How many units might Quality Assurance inspect before finding 3 defective
items?
r = nbinrnd(3,0.01,1,6) + 3
r =
496
See Also
142
420
396
851
178
nbincdf, nbininv, nbinpdf, nbinstat
2-131