File:Scaled chi squared cdf.svg

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Description
English: A plot of the cumulative distribution function for 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 c.d.f. for the variance ratio s2/σ2 for any value of σ.
Date
Source Own work. Created in R using the code fragment below.
Author Jheald

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I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

See also

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W3CiThe source code of this SVG is valid.
 
This chart was created with R.

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Date/TimeThumbnailDimensionsUserComment
current10:47, 21 October 2012Thumbnail for version as of 10:47, 21 October 2012270 × 270 (52 KB)Jheald (talk | contribs)corrected label: f(x) should have been F(x)
10:18, 21 October 2012Thumbnail for version as of 10:18, 21 October 2012270 × 270 (53 KB)Jheald (talk | contribs)User created page with UploadWizard

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