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Last call for abstracts 29th April for EARL Conference London
By Angela Roberts EARL is a Conference for users and developers of the open source R programming language. The primary focus of the Conference is the commercial usage of R across a range of industry...
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Password Input with getPass
By wrathematics As of this morning, the getPass package version 0.1-1 is available on CRAN. The package offers a portable way to read user input without echoing the text, for the purposes of reading...
View ArticleNew R package to access World Bank data
By Markus Gesmann Staying on top of new CRAN packages is quite a challenge nowadays. However, thanks to Dirk’s CRANberries service I occasionally spot a new gem, such as wbstats, which appeared on CRAN...
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The five element ninjas approach to teaching design matrices
By Maxwell B. Joseph Design matrices unite seemingly disparate statistical methods, including linear regression, ANOVA, multiple regression, ANCOVA, and generalized linear modeling.As part of a...
View ArticleA simple proof that the p-value distribution is uniform when the null...
By Shravan Vasishth Someone asked this question in my linear modeling class: why is it that the p-value has a uniform distribution when the null hypothesis is true? Proof is remarkably simple. First,...
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Complex Tables – Exercises
By John Akwei The ftable() function combines Cross-Tabulation with the ability to format , or “flatten”, contingency tables of 3 or more dimensions. The resulting tables contain the combined counts of...
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On Nested Models
By John Mount We have been recently working on and presenting on nested modeling issues. These are situations where the output of one trained machine learning model is part of the input of a later...
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How to Install R on Linux Ubuntu 16.04 Xenial Xerus
By Kris Eberwein The long-awaited new Ubuntu LTS Xenial Xerus was released last week. I wrote a tutorial on installing R and R-Studio on the old 14.04 LTS, so I figured I’d update that document. Not...
View ArticleLe Monde puzzle [#960]
By xi’an (This article was originally published at R – Xi’an’s Og, and syndicated at StatsBlogs.) An arithmetic Le Monde mathematical puzzle: Given an integer k>1, consider the sequence defined by...
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A segmented model of CRAN package growth
By Andrie de Vries by Andrie de Vries A few weeks ago I wrote about the growth of CRAN packages, where I demonstrated how to scrape CRAN archives to get an estimate of the number of packages over time....
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