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File:Scaled chi squared.svg

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Summary

Description
English: A plot of the scaled chi-squared probability distribution, the probability distribution of the sample variance s2,

where s2 is the mean of the squares of ν independent normal distributions of mean 0 and standard deviation σ; plotted here for the case σ = 1.0.

Equivalently this is also a plot of the distribution of the variance ratio s22 for any value of σ. As ν increases s22 becomes more sharply peaked close to 1
Date
Source Own work. Created in R using the code fragment below.
Author Jheald


 
This chart was created with R.

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21 October 2012

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Date/TimeThumbnailDimensionsUserComment
current09:52, 21 October 2012Thumbnail for version as of 09:52, 21 October 2012270 × 270 (54 KB)JhealdUser created page with UploadWizard

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