File:Normal Distribution PDF.svg

Description	A selection of Normal Distribution Probability Density Functions (PDFs). Both the mean, μ, and variance, σ², are varied. The key is given on the graph.
Date	02/04/2008
Source	self-made, Mathematica, Inkscape
Author	Inductiveload
Permission (Reusing this file)	Public domainPublic domainfalsefalse I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. Public domainPublic domainfalsefalse

[edit] Mathematica Code

Plot[
 {
  PDF[NormalDistribution[1, Sqrt[0.2]], x],

 
    },
 {x, -5, 5},
 PlotRange -> All,
 Axes -> False]

[edit] R Code

#                       Normal Distribution PDF
#range
x=seq(-5,5,length=200)
#plot each curve
plot(x,dnorm(x,mean=0,sd=sqrt(.2)),type="l",lwd=2,col="blue",main='Normal Distribution PDF',xlim=c(-5,5),ylim=c(0,1),xlab='X',
ylab='φμ, σ²(X)')
curve(dnorm(x,mean=0,sd=1), add=TRUE,type="l",lwd=2,col="red")
curve(dnorm(x,mean=0,sd=sqrt(5)), add=TRUE,type="l",lwd=2,col="brown")
curve(dnorm(x,mean=-2,sd=sqrt(.5)), add=TRUE,type="l",lwd=2,col="green")

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:19, 22 September 2009		720 × 460 (65 KB)	Stpasha	(Trying again, there seems to be a bug with previous upload…)
	17:15, 22 September 2009		720 × 460 (65 KB)	Stpasha	(Curves are more distinguishable; numbers correctly rendered in roman style instead of italic)
	14:07, 27 June 2009		720 × 460 (55 KB)	Autiwa	(fichier environ 2 fois moins gros. Purgé des définitions inutiles, et avec des plots optimisés au niveau du nombre de points.)
	18:22, 5 September 2008		720 × 460 (109 KB)	PatríciaR	(from http://tools.wikimedia.pl/~beau/imgs/ (recovering lost file))
	19:09, 2 April 2008	No thumbnail	(109 KB)	Inductiveload	({{Information |Description=A selection of Normal Distribution Probability Density Functions (PDFs). Both the mean, ''μ'', and variance, ''σ²'', are varied. The key is given on the graph. |Source=self-made, Mathematica, Inkscape |Date=02/04/2008 |Author)

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The following other wikis use this file:

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  • User:Hylon.chen/Probability concepts
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• Usage on es.wikipedia.org
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  • تابع توزیع تجمعی
  • تابع گاوسی
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  • Loi normale
• Usage on hi.wikipedia.org
  • सिक्स सिग्मा
• Usage on id.wikipedia.org
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  • Statistika inferensia
• Usage on jv.wikipedia.org
  • Statistika inferènsial
• Usage on ka.wikipedia.org
  • ნორმალური განაწილება
• Usage on ko.wikipedia.org
  • 정규분포
  • 신뢰성 공학
• Usage on mr.wikipedia.org
  • सामान्य वितरण
• Usage on pl.wikipedia.org
  • Rozkład normalny
  • Sześć sigma
• Usage on ru.wikipedia.org
  • Шесть сигма
• Usage on ta.wikipedia.org
  • இயல்நிலைப் பரவல்
• Usage on th.wikipedia.org
  • การแจกแจงแบบปรกติ
• Usage on vi.wikipedia.org
  • Phân phối chuẩn
• Usage on zh-min-nan.wikipedia.org
  • Siông-thài hun-pò͘