Rand Wilcox constantly updates the functions accompanying his books on robust statistics. Recently, they have been updated to version 20. The functions are available in the WRS package for R – for installation simply type
[cci]install.packages(“WRS”, repos=”http://R-Forge.R-project.org”, type=”source”)[/cci]
Update: For installation of the WRS package, please use only the fail-safe installation procedure described here!
In version 0.20, a number of functions dealing with ANCOVA have been added and some others improved. Unfortunately, only very few help files exist for the functions. I would recommend to check out the source code, as most functions have a comment section roughly explaining the parameters. Alternatively, consult Wilcox’ books for descriptions of the functions.
References:
Wilcox, R. R. (2012). Introduction to Robust Estimation and Hypothesis Testing, 3rd Ed. Academic Press.
Wilcox, R. (2012). Modern Statistics for the Social and Behavioral Sciences: A Practical Introduction. CRC Press.
Wilcox, R. R. (2010). Fundamentals of Modern Statistical Methods: Substantially Improving Power and Accuracy. Springer, 2nd Ed.
Wilcox, R. R. (2009). Basics Statistics: Understanding Conventional Methods and Modern Insights. New York: Oxford.
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Prof. Dr. Felix Schönbrodt
Hi,
I wanted to install the WRS package from Rand Wilcox. When I entered the command line, I got the following response. Is this package no longer available?
> install.packages(“WRS”,repos=”http://R-Forge.R-project.org”)
Installing package into ‘C:/Documents/R/win-library/3.0’
(as ‘lib’ is unspecified)
Warning: unable to access index for repository http://R-Forge.R-project.org/bin/windows/contrib/3.0
Warning message:
package ‘WRS’ is not available (for R version 3.0.1)
Thanks in advance!
Ben
Hi, have you tried the fail-safe installation procedure: https://www.nicebread.de/installation-of-wrs-package-wilcox-robust-statistics/ ?
I have the same problem and, yes, I have tried the installation procedure.
Usually it works now. Could you post your sessionInfo() from R, and your OS?
Felix
So I just upgraded from Mint 15 to Kubuntu 13.1064bit but it still doesn’t work properly. With regard to the suggested packages, I get all but parallel:
package ‘parallel’ is not available (for R version 3.0.1)
and the same as before for WRS:
package ‘WRS’ is not available (for R version 3.0.1)
> sessionInfo()
R version 3.0.1 (2013-05-16)
Platform: x86_64-pc-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=C LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] devtools_1.3
loaded via a namespace (and not attached):
[1] digest_0.6.3 evaluate_0.5.1 httr_0.2 memoise_0.1 parallel_3.0.1
[6] RCurl_1.95-4.1 stringr_0.6.2 tcltk_3.0.1 tools_3.0.1 whisker_0.3-2
Not sure what happens here, it all used to work fine before …
An outstanding share! I have just forwarded this onto a coworker who was doing a little research on this.
And he actually bought me lunch simply because I discovered it for him…
lol. So let me reword this…. Thanks for the meal!!
But yeah, thanks for spending some time to talk about this subject here on your website.