PRODUCTS
Mathematica
Mathematica Home Edition
Mathematica for Students
Mathematica for the Classroom
grid
Mathematica
Wolfram Lightweight Grid Manager
web
Mathematica
Mathematica Player
(free download)
Mathematica Player Pro
Wolfram
Workbench
Mathematica
Applications
SOLUTIONS
Engineering
Aerospace Engineering & Defense
Chemical Engineering
Electrical Engineering
Image Processing
Industrial Engineering
Materials Science
Mechanical Engineering
Operations Research
Optics
Petroleum Engineering
Biotechnology & Medicine
Bioinformatics
Medical Imaging
Finance, Statistics, & Business Analysis
Actuarial Sciences
Data Analysis & Mining
Econometrics
Economics
Financial Engineering & Mathematics
Financial Risk Management
Statistics
Software Engineering & Content Delivery
Authoring & Publishing
Interface Development
Software Engineering
Web Development
Science
Astronomy
Biological Sciences
Chemistry
Environmental Sciences
Geosciences
Social & Behavioral Sciences
Design, Arts, & Entertainment
Game Design, Special Effects, & Generative Art
Education
Higher Education
Precollege Education
Students
Technology
Interactive Deployment
High-Performance & Parallel Computing (HPC)
See Also: Technology Guide
PURCHASE
Online Store
Other Ways to Buy
Volume & Site Licensing
Contact Sales
Software
Service
Upgrades
Training
Books
FOR USERS
All User Resources
Product Registration
Technical Support
Customer Service
Developer Support
Does My Site Have a License?
Free Seminars
Learning Center
Training
Custom Group Seminars
Documentation & Examples
Tutorial Screencasts
Video Gallery
Demonstrations Project
Education Portal
Student Resources
COMPANY
About Wolfram Research
News & Events
Wolfram Blog
Employment Opportunities
History of
Mathematica
Stephen Wolfram's Home Page
Contact Us
OUR SITES
Wolfram|Alpha
Demonstrations Project
Wolfram Blog
MathWorld
Integrator
Wolfram Functions Site
Mathematica Journal
Wolfram Library Archive
Wolfram
Tones
Wolfram Science
Stephen Wolfram
DOCUMENTATION CENTER SEARCH
Mathematica
>
Data Manipulation
>
Statistics
>
Statistical Distributions
>
Continuous Statistical Distributions
>
Mathematica
>
Mathematics and Algorithms
>
Statistics
>
Statistical Distributions
>
Continuous Statistical Distributions
>
Built-in
Mathematica
Symbol
Continuous Distributions
Tutorials »
|
BetaDistribution
ChiSquareDistribution
ExponentialDistribution
InverseGammaDistribution
Gamma
GammaRegularized
InverseGammaRegularized
See Also »
|
Continuous Statistical Distributions
More About »
GammaDistribution
GammaDistribution
[
,
]
represents a gamma distribution with shape parameter
and scale parameter
.
MORE INFORMATION
The probability density for value
x
in a gamma distribution is proportional to
for
, and is zero for
.
»
GammaDistribution
allows
and
to be any positive real numbers.
GammaDistribution
can be used with such functions as
Mean
,
CDF
and
RandomReal
.
»
EXAMPLES
CLOSE ALL
Basic Examples
(2)
The mean and variance of a gamma distribution:
In[1]:=
Out[1]=
In[2]:=
Out[2]=
The probability density function of the gamma distribution depends on the
Gamma
function:
In[1]:=
Out[1]=
In[2]:=
Out[2]=
Scope
(4)
Applications
(2)
Properties & Relations
(5)
Possible Issues
(2)
SEE ALSO
BetaDistribution
ChiSquareDistribution
ExponentialDistribution
InverseGammaDistribution
Gamma
GammaRegularized
InverseGammaRegularized
TUTORIALS
Continuous Distributions
MORE ABOUT
Continuous Statistical Distributions
New in 6
, 
] and scale parameter .
for 
, and is zero for 
. » and to be any positive real numbers.
EXAMPLES
Basic Examples 
Scope 