GammaDistribution• GammaDistribution[ ,  ] gives the gamma distribution with shape parameter and scale parameter . • When  and  , the gamma distribution GammaDistribution[, ] describes the distribution of a sum of squares of  unit normal random variables. This form of the gamma distribution is called a chi-square distribution with  degrees of freedom. When  , the gamma distribution takes on the form of the exponential distribution ExponentialDistribution[], often used in describing the waiting time between events.
• See also: Mean, StandardDeviation, Variance, CDF, PDF.
Examples Using InstantCalculatorsHere are the InstantCalculators for the GammaDistribution function. Enter the parameters for your calculation and click Calculate to see the result. This generates a set of random numbers that follow the gamma distribution.
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This gives the probability density function for the gamma distribution.
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This gives the cumulative distribution function for the gamma distribution.
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Entering Commands DirectlyYou can paste a template for this command via the Text Input button on the GammaDistribution Function Controller. This generates a set of random numbers that follow the gamma distribution.
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This gives the probability density function for the gamma distribution.
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This gives the cumulative distribution function for the gamma distribution.
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