binostat (Statistics Toolbox)

Mean and variance for the binomial distribution.

Syntax

[M,V] = binostat(N,P)

Description

[M,V] = binostat(N,P) returns the mean and variance for the binomial distribution with parameters specified by N and P. Vector or matrix inputs for N and P must have the same size, which is also the size of M and V. A scalar input for N or P is expanded to a constant matrix with the same dimensions as the other input.

The mean of the binomial distribution with parameters n and p is np. The variance is npq, where q = 1-p.

Examples

n = logspace(1,5,5)
n =
          10         100        1000       10000      100000
[m,v] = binostat(n,1./n)
m =
     1     1     1     1     1
v =
    0.9000    0.9900    0.9990    0.9999    1.0000
[m,v] = binostat(n,1/2)
m =
           5          50         500        5000       50000
v =
   1.0e+04 *
    0.0003    0.0025    0.0250    0.2500    2.5000

binornd bootstrp