October 2011

Multiply Imputing an Outcome Variable

October 12, 2011 | Carlisle Rainey

Some scholars suggest that multiply imputing an outcome variable is incorrect. I use intuition and simulation to argue that multiply imputing outcomes can drastically improve estimates, even in the case of non-ignorable missingness. Continue reading &#... [Read more...]

Generosity of Asian Central Banks

October 12, 2011 | klr

The only thing that separates the United States from Europe and the notorious PIIGS is the generosity of Asian Central Banks who have been consistently quantitatively easing since 1998 (Join the Reserves). From TimelyPortfolio Without this generos...
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What’s there to like about R?

October 12, 2011 | yang

Update 10/11/2011: There’s a good discussion on RedditUpdate 10/12/2011: Note manipulate package and highlight data.table packageThe R statistical computing platform is a rising star that’s been gaining popularity and attention, but it gets no respect in the hood. It’s telling that a popular guide to R is called ... [Read more...]

Identifying Records in Data Frame A That Are Not Contained In Data Frame B – A Comparison

October 12, 2011 | songpants

Yesterday I launched my first question at Stackoverflow and apparently did a lot of things wrong as I managed to get my question closed wihtin hours http://stackoverflow.com/questions/7728462/identify-records-in-data-frame-a-not-contained-in-data-frame-b I had collected 9 different solutions to the problem and made the mistake to put it all within the original ... [Read more...]

Online

October 12, 2011 | songpants

Hello world, I decided to start blogging a bit to throw my weird R code examples at you ;-) Hope you’ll like it! Greetz, Janko [Read more...]

R – Turorial II

October 12, 2011 | R – StudyTrails

  NOTE : This tutorial has been superseded by the exhaustive tutorials Here Lists Collection of Objects of same or mixed type.List may also contain vector or other lists. Create a list using the funtion list(). The following example shows operations that can be performed on a list. __ alphabets=list(a=”... [Read more...]

R related books: Traditional vs online publishing

October 12, 2011 | mages

How many R related books have been published so far? Who is the most popular publisher? How many other manuals, tutorials and books have been published online? Let's find out. A few years ago I used the publication list on r-project.org as an argument ...
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Le Monde puzzle [#743]

October 11, 2011 | xi'an

As Le Monde weekend has yet again changed its format (with so much more advertisements for luxurious items that I sometimes wonder whether or not this is the weekend edition of Le Monde!], it took me a while to locate the mathematical puzzle. The good news is there now is ... [Read more...]

Where to find data to use with R

October 11, 2011 | Joseph Rickert

(Contributing blogger Joe Rickert has put together a fantastic list of data sources suitable for use with R. If you're looking for data to use in the Applications of R Contest -- entries close October 31 -- this is a great resource for you -- Ed.) Hardly a day goes by ... [Read more...]

Setting plots side by side

October 11, 2011 | Luis

This is simple example code to display side-by-side lattice plots or ggplot2 plots, using the mtcars dataset that comes with any R installation. We will display a scatterplot of miles per US gallon (mpg) on car weight (wt) next to … Continue reading → [Read more...]

R Bloggers widget in R Graph Gallery

October 11, 2011 | romain francois

Following last post about partnership with R Bloggers, Tal and I have added a small widget to the gallery main page to present links to recent posts on R Bloggers It uses the wordpress api to grab information about the rss feed generated by R Bl... [Read more...]

The Work of the 1 Percent and the 0.1 Percent

October 10, 2011 | Ethan Brown

The Occupy Wall Street movement chants "We are the 99 percent, you are the 1 percent." It's a catchy refrain, and there are many excellent reasons to put the focus on Wall Street in the struggle for economic and political justice in the US. But even singling out one percent of the ... [Read more...]

Top 50 Statistics blogs

October 10, 2011 | David Smith

TheBestColleges.org has just published their list of the "Top 50 Statistics Blogs of 2011", and I'm pleased say that not only did our own Revolutions blog make the list, but it's in fine company with some truly excellent blogs. Several of my personal favourites made the list, including: Guardian columnist Ben ... [Read more...]

Upgrading R (and packages)

October 10, 2011 | Luis

I tend not to upgrade R very often—running from 6 months to 1 year behind in version numbers—because I had to reinstall all packages: a real pain. A quick search shows that people have managed to come up with good … Continue reading → [Read more...]
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