File:GQplot.svg
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Original file (SVG file, nominally 630 × 630 pixels, file size: 143 KB)
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Summary
| Description | |
| Date | |
| Source | Own work |
| Author | Protonk |
| SVG development |  This vector image was created with an unknown SVG tool. |
Source code in R available here and exact plotting code below:
#Data
set.seed(127)
err<-NULL
x<-seq(1,200,1)
y<-3.8*x+25+err
for(i in c(1:200)) {
err[i]<-rnorm(1,0,i)
}
y<-3.8*x+25+err;
lowlm<-lm(y[1:90]~x[1:90])
highlm<-lm(y[111:200]~x[111:200])
#PLOT
plot(x[c(1:90)],lowlm$residuals^2,pch=20,cex=0.75,xlab="Index of values",ylab="Squared Residuals",xlim=c(0,200),main="Goldfeld-Quandt Parametric Test")
points(x[c(111:200)],highlm$residuals^2,pch=20,cex=0.75)
abline(v=91,col=4,lty=3)
abline(v=110,col=4,lty=3)
text(50,22000,expression({F[scriptscriptstyle(over((n-k-2-2),2))]}~scriptscriptstyle(widetilde(dist))~{over(S[high],S[low])} == 11.422),cex=1.5)
Licensing
I, the copyright holder of this work, hereby publish it under the following licenses:
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- You are free:
- to share – to copy, distribute and transmit the work
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- 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. |
You may select the license of your choice.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:48, 26 July 2010 | | 630 × 630 (143 KB) | Protonk | Less tiny text. More accurate in terms of the test itself. |
| 20:15, 24 July 2010 |  | 630 × 630 (157 KB) | Protonk | ||
| 20:09, 24 July 2010 |  | 630 × 630 (156 KB) | Protonk | again | |
| 20:07, 24 July 2010 |  | 630 × 630 (156 KB) | Protonk | preview still looks crappy | |
| 19:59, 24 July 2010 |  | 630 × 630 (122 KB) | Protonk | nothing to see here.... | |
| 19:59, 24 July 2010 |  | 630 × 630 (122 KB) | Protonk | {{Information |Description = to be transferred later |Source = I (~~~) created this work entirely by myself. |Date = ~~~~~ |Author = ~~~ |other_versions = }} |
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