Noncentral Chi squared distribution

MR-dice-icon.png Download a pdf copy of this help file  here


image1094.gif






Format: VoseNCChiSQ(n,NcP,U)

Noncentral Chi squared equations

The noncentral chi squared is a generalized version of the chi squared distribution: when the non-centrality parameter Ncp=0, it reduces to a Chi Squared.

image223.jpg

Kotz et. al (1995) provide a thorough explanation of its origin and uses.

VoseFunctions for this distribution

VoseNCChiSq generates values from this distribution or calculates a percentile

VoseNCChiSqObject constructs a distribution object for this distribution

VoseNCChiSqProb returns the probability density or cumulative distribution function for this distribution

VoseNCChiSqProb10 returns the log10 of the probability density or cumulative distribution function  

VoseNCChiSqFit generates values from this distribution fitted to data, or calculates a percentile from the fitted distribution

VoseNCChiSqObject constructs a distribution object of this distribution fitted to data

VoseNCChiSqFitP returns the parameters of this distribution fitted to data