File:Anscombe's quartet 3.svg
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DescriptionAnscombe's quartet 3.svg |
This graphic represents the four datasets defined by Francis Anscombe for which some of the usual statistical properties (mean, variance, correlation and regression line) are the same, even though the datasets are different. Reference:
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Source | Anscombe.svg | ||||||
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SVG development InfoField | This graphic is derived from earlier work by Schutz and the R development core team. As far as their rights and licensing allow, I license my contribution under the all the following licenses. The GPL is the only one I am sure applies.
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Source code InfoField | R codeR code to create the graphic:
svg("Anscombe's quartet 3.svg", width=11, height=8)
op <- par(las=1, mfrow=c(2,2), mar=1.5+c(4,4,1,1), oma=c(0,0,0,0),
lab=c(6,6,7), cex.lab=2.0, cex.axis=1.3, mgp=c(3,1,0))
ff <- y ~ x
for(i in 1:4) {
ff[[2]] <- as.name(paste("y", i, sep=""))
ff[[3]] <- as.name(paste("x", i, sep=""))
lmi <- lm(ff, data= anscombe)
xl <- substitute(expression(x[i]), list(i=i))
yl <- substitute(expression(y[i]), list(i=i))
plot(ff, data=anscombe, col="red", pch=21, cex=2.4, bg = "orange",
xlim=c(3,19), ylim=c(3,13)
, xlab=eval(xl), ylab=yl # for version 3
)
abline(lmi, col="blue")
}
par(op)
dev.off()
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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[edit]This image is a derivative work of the following images:
- File:Anscombe.svg licensed with GPL
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:18, 26 March 2010 | 990 × 720 (59 KB) | Avenue (talk | contribs) | Increase size of axis titles | |
17:09, 26 March 2010 | 990 × 720 (59 KB) | Avenue (talk | contribs) | {{Information |Description=This graphic represents the four datasets defined by Francis Anscombe for which some of the usual statistical properties (mean, variance, correlation and regression line) are the same, even though the datasets are different. |So |
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