Last data update: 2014.03.03

R: Parameter estimation for the Gamma distribution
gammafitR Documentation

Parameter estimation for the Gamma distribution

Description

Estimates parameters for the Gamma distribution using the Method of Maximum Likelihood, works with weighted data.

Usage

gammafit(x, wt = NULL)

Arguments

x

A vector of observations

wt

Optional set of weights

Value

shape

The shape parameter

scale

The scale parameter (equal to 1/rate)

Author(s)

Jared O'Connell jaredoconnell@gmail.com

References

Choi, S. and Wette, R. (1969), Maximum likelihood estimation of the parameters of the gamma distribution and their bias, Technometrics, 11, 683-96-690.

Examples

  gammafit(rgamma(1000,shape=10,scale=13))

Results