gamstat
Gamma mean and variance
Syntax
[M,V] = gamstat(A,B)
Description
[M,V] = gamstat(A,B)
returns the mean of and
variance for the gamma distribution with shape parameters in A
and scale
parameters in B
. A
and B
can be
vectors, matrices, or multidimensional arrays that have the same size, which is also the
size of M
and V
. A scalar input for
A
or B
is expanded to a constant array with the
same dimensions as the other input. The parameters in A
and
B
must be positive.
The mean of the gamma distribution with parameters A and B is AB. The variance is AB2.
Examples
[m,v] = gamstat(1:5,1:5) m = 1 4 9 16 25 v = 1 8 27 64 125 [m,v] = gamstat(1:5,1./(1:5)) m = 1 1 1 1 1 v = 1.0000 0.5000 0.3333 0.2500 0.2000
Extended Capabilities
Version History
Introduced before R2006a