Gamma Distribution

These functions give you access to the gamma distribution. For more information about Fathom's distribution functions, click here.

gammaDensity(x, shape, scale, min)

gammaCumulative(x, shape, scale, min)

gammaQuantile(x, shape, scale, min)

 shape = a shape parameter
scale
= the mean of the distribution
min
= the minimum value

The density, cumulative, and quantile functions for the gamma distribution.

The x (the independent variable) and the shape parameter are required. The shape must be positive.

The scale is a scaling factor. The min is a horizontal translation.

defaults: scale = 1, min = 0.

You may also draw random values from this distribution: 

randomGamma(shape, scale, min)

A random value drawn from that distribution.

Here are some plots to help you understand the meaning of the numDF and denomDF parameters.

See also statistical functions (for mean( ) and its cousins).