File:Anscombe's quartet 3 cropped.jpg
Anscombe's_quartet_3_cropped.jpg (468 × 312 pixels, file size: 39 KB, MIME type: image/jpeg)
Captions
Captions
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| 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. Reference:
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| Source code | R code to create the graphic: codesvg("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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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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This work is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or any later version. This work is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. See version 2 and version 3 of the GNU General Public License for more details. |
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
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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. |
Original upload log edit
This image is a derivative work of the following images:
- File:Anscombe.svg licensed with GPL
Uploaded with derivativeFX
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:10, 17 May 2013 | | 468 × 312 (39 KB) | AxelHH (talk | contribs) | {{Information |Description ={{de|1=ghfgh}} |Source ={{own}} |Author =AxelHH |Date = |Permission = |other_versions = }} |
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