Gamma distribution

gamma distribution

A continuous random variable x is said to have a gamma distribution if the range of x consists of all positive real numbers and if x possesses a density function f(x) that satisfies the equation

where β and p are positive numbers and where Γ is the gamma function defined by the integral

for p > 0.

The mean of the density function is βp, and the standard deviation is β(p)^½. The gamma distribution, which is a special case of the Pearson distribution, is skewed to the right. In meteorology, scalar multiples of the gamma distribution are used to represent size distributions of cloud drops.
See skewness.

INDEX
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
0
1
2
3
4
5
6
7
8
9