R Dataset / Package robustbase / SiegelsEx
Attachment | Size |
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dataset-17444.csv | 50 bytes |
Documentation |
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On this Picostat.com statistics page, you will find information about the SiegelsEx data set which pertains to Siegel's Exact Fit Example Data. The SiegelsEx data set is found in the robustbase R package. Try to load the SiegelsEx data set in R by issuing the following command at the console data("SiegelsEx"). This may load the data into a variable called SiegelsEx. If R says the SiegelsEx data set is not found, you can try installing the package by issuing this command install.packages("robustbase") and then attempt to reload the data with library("robustbase") followed by data("SiegelsEx"). Perhaps strangley, if R gives you no output after entering a command, it means the command succeeded. If it succeeded you can see the data by typing SiegelsEx at the command-line which should display the entire dataset. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the SiegelsEx R data set. The size of this file is about 50 bytes. Siegel's Exact Fit Example DataDescriptionA small counterexample data set devised by Andrew Siegel. Six (out of nine) data points lie on the line y = 0 such that some robust regression estimators exhibit the “exact fit” property. Usagedata(SiegelsEx) FormatA data frame with 9 observations on the following 2 variables.
SourceEmerson and Hoaglin (1983, p.139) ReferencesPeter J. Rousseeuw and Annick M. Leroy (1987) Robust Regression and Outlier Detection Wiley, p.60–61 Examplesdata(SiegelsEx) plot(SiegelsEx, main = "Siegel's example for 'exact fit'") abline( lm(y ~ x, data = SiegelsEx)) abline(MASS::lqs(y ~ x, data = SiegelsEx, method = "lms"), col = 2) legend("topright", leg = c("lm", "LMS"), col=1:2, lwd=1, inset = 1/20) -- Dataset imported from https://www.r-project.org. |
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