This is machine translation

Translated by Microsoft
Mouseover text to see original. Click the button below to return to the English version of the page.

Note: This page has been translated by MathWorks. Click here to see
To view all translated materials including this page, select Country from the country navigator on the bottom of this page.

ncx2rnd

Noncentral chi-square random numbers

Syntax

R = ncx2rnd(V,DELTA)
R = ncx2rnd(V,DELTA,m,n,...)
R = ncx2rnd(V,DELTA,[m,n,...])

Description

R = ncx2rnd(V,DELTA) returns a matrix of random numbers chosen from the noncentral chi-square distribution using the corresponding degrees of freedom in V and positive noncentrality parameters in DELTA. V and DELTA can be vectors, matrices, or multidimensional arrays that have the same size, which is also the size of R. A scalar input for V or DELTA is expanded to a constant array with the same dimensions as the other input.

R = ncx2rnd(V,DELTA,m,n,...) or R = ncx2rnd(V,DELTA,[m,n,...]) generates an m-by-n-by-... array. The V, DELTA parameters can each be scalars or arrays of the same size as R.

Examples

ncx2rnd(4,2,6,3)
ans =
  6.8552  5.9650  11.2961
  5.2631  4.2640  5.9495
  9.1939  6.7162  3.8315
 10.3100  4.4828  7.1653
  2.1142  1.9826  4.6400
  3.8852  5.3999  0.9282

References

[1] Evans, M., N. Hastings, and B. Peacock. Statistical Distributions. 2nd ed., Hoboken, NJ: John Wiley & Sons, Inc., 1993, pp. 50–52.

[2] Johnson, N., and S. Kotz. Distributions in Statistics: Continuous Univariate Distributions-2. Hoboken, NJ: John Wiley & Sons, Inc., 1970, pp. 130–148.

Extended Capabilities

Introduced before R2006a