chi2stat
Chi-square mean and variance
Syntax
[M,V] = chi2stat(NU)
Description
[M,V] = chi2stat(NU)
returns the mean of and
variance for the chi-square distribution with degrees of freedom parameters specified by
NU
. NU
can be a vector, a matrix, or a multidimensional
array. The degrees of freedom parameters in NU
must be positive.
The mean of the chi-square distribution is NU
, the degrees of freedom
parameter, and the variance is 2NU
.
Examples
nu = 1:10; nu = nu'*nu; [m,v] = chi2stat(nu) m = 1 2 3 4 5 6 7 8 9 10 2 4 6 8 10 12 14 16 18 20 3 6 9 12 15 18 21 24 27 30 4 8 12 16 20 24 28 32 36 40 5 10 15 20 25 30 35 40 45 50 6 12 18 24 30 36 42 48 54 60 7 14 21 28 35 42 49 56 63 70 8 16 24 32 40 48 56 64 72 80 9 18 27 36 45 54 63 72 81 90 10 20 30 40 50 60 70 80 90 100 v = 2 4 6 8 10 12 14 16 18 20 4 8 12 16 20 24 28 32 36 40 6 12 18 24 30 36 42 48 54 60 8 16 24 32 40 48 56 64 72 80 10 20 30 40 50 60 70 80 90 100 12 24 36 48 60 72 84 96 108 120 14 28 42 56 70 84 98 112 126 140 16 32 48 64 80 96 112 128 144 160 18 36 54 72 90 108 126 144 162 180 20 40 60 80 100 120 140 160 180 200
Extended Capabilities
Version History
Introduced before R2006a