Norm Matloff points us to a pithy example that sums up Simpson's Paradox perfectly, captured in the title of a medical paper: "Good for Women, Good for Men, Bad for People". He explains how Simpson's Paradox isn't a paradox at all, but just the consequence of including a minor variable in a model ahead of a more significant variable,...
Announcing RStudio Shiny Server Pro v1.1
We are happy to announce the availability of v1.1 of RStudio Shiny Server Pro, our commercial server for deploying Shiny applications. In this release we took your feedback and...
R jobs (April 22nd 2014)
This is the bimonthly R Jobs post (for 2014-04-22), based on the R-bloggers’ sister website: R-users.com. If you are an employer who is looking to hire people from the R community,...
sjPlot: New options for creating beautiful tables, documentation on #RPubs #rstats
A new update of my sjPlot package was just released on CRAN. This release focused on improving existing functions and bug fixes again. Especially the table output functions (see...
R activity around the world
This project was inspired by "Where is the R Activity?" and our follow-up post on the number of useR! 2013 attendees. But instead of static maps, now we gathered...
Demo file for the fanplot package
I have added a demo file to the latest version of the fanplot package. It has lots of examples of different plotting styles to represent uncertainty in time series...
Overlaying species occurrence data with climate data
One of the goals of the rOpenSci is to facilitate interoperability between different data sources around web with our tools. We can achieve this by providing functionality within...
Simple mortgage calculator
Have you ever thought of borrowing some money? A common case is when you have to borrow money for buying a house, which is called a mortgage. Wikipedia ('Mortgage...
Rgitbook Package for Using R Markdown with Gitbook
Last week I published an R script to interface with Gitbook. I received some positive feedback and decided to include all the code in an R package....
Notes from the Tokyo R User Group meeting, 17 April 2014
Last Thursday I had the pleasure to attend the Tokyo R user group meeting. And what a fun meeting it was! Over 40 R users had come together in...
Simpson’s Paradox Is Back
The latest issue of the American Statistician has a set of thought-provoking point/counterpoint papers on Simpson’s Paradox, with a tie-in to the controversial issue of causality. (I will not...
Seven forecasting blogs
There are several other blogs on forecasting that readers might be interested in. Here are seven worth following: No Hesitations by Francis Diebold (Professor of Economics, University of Pennsylvania). Diebold...
Exploring Factors with rCharts and factorAnalytics
Fama and French changed the financial world with their factors in 1993. Another duo Andrea Frazzini and Lasse Heje Pedersen have expanded our world with their Betting Against Beta...
RStata: Funny or just annoying?
Okay okay. The joke is up. Besides likely necessitating an emergency call to from the Stata Management Team to the Stata Legal Team, my post on April 1st of...
Fracking and House Prices on the Marcellus Shale
Starting last summer I worked on a short project that set out to estimate the potential costs of externalities due to unconventional shale gas production in the Marcellus shale...
Webinar: Big-Data Trees for R
If you missed last week's webinar presented by Revolution Analytics' US Chief Scientist Mario Inchiosa, Decision Trees built in Hadoop plus more Big Data Analytics with Revolution R Enterprise,...
Singleton Remover CSV v0.3
I created a small program called Singleton Remover CSV to help researchers process files quickly that might otherwise take a long time to be handled by hand. The program...
Modified lencat() — Increased Flexibility with dplyr
One of the first functions in the FSA package was lencat(), which served me well over the years. However, I have been bothered by the use of a formula...
Free interactive R exercises on OpenIntro
DataCamp first to offer free interactive R tutorials via the OpenIntro platform. In one week, the ten-week Coursera course on Data Analysis and Statistical Inference by prof. Mine Çetinkaya-Rundel...
High incidence in Measles Data in Project Tycho
In this third post on Measles data I want to have a look at some high incidence occasions. As described before, the data is from Project Tycho,...
The Circus Tent Problem with R’s Quadprog
The MathWorks has an interesting demo on how the shape of a circus tent can be modeled as the solution of a quadratic program in MATLAB. In...
R-3.1.0 + OpenBLAS Speed Comparisons
With the recent release of R-3.1.0, and the near-recent release of OpenBLAS 0.29rc2, it was time to recompile Rblas.dll and do some new speed tests. The test computer has...
OpenCPU release 1.3 and 1.4
After a few months of testing we present OpenCPU versions 1.3 and 1.4. These releases do not introduce any major changes in the...
Testing for Linear Separability with Linear Programming in R
For the previous article I needed a quick way to figure out if two sets of points are linearly separable. But for crying out loud I could not find a...
Play 2048… using R!
I've lost about 100 hours over the past week to the black hole of 2048. In an attempt to...
The Current Golden Era of the NBA
We are in the midst of what many are calling a "golden age" of the NBA. Being in the midst of a time where attention to the sport has...
Old tails: a crude power law fit on ebook sales
We use R to take a very brief look at the distribution of e-book sales on Amazon.com. Recently Hugh Howey shared some eBook sales data spidered from Amazon.com: The...
R and the weather in the local news
The Mountain View Voice is a weekly newspaper serving the Silicon Valley area, and is a familiar sight to anyone wandering the streets of Palo Alto or Menlo Park....
DM Radio on Data Science
A couple of weeks ago, I participated in a panel discussion for DM Radio: "Still Sexy? How's that Data Scientist Gig Working Out?". The title was provocative, but the...
Plotly: collaborative, publication-quality graphing. 
