by Joseph Rickert We all "know" that correlation does not imply causation, that unmeasured and unknown factors can confound a seemingly obvious inference. But, who has not been tempted by the seductive quality of strong correlations? Fortunately, it is also well known that a well done randomized experiment can account ... [Read more...]

A big project at my work that I was involved with over the past year was the production of modelled estimates of gross domestic product at the District and City level. There are official statistics at the Regional Council level (16 of them in New Zealand), so the aim of this ... [Read more...]

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R Articles at Simple TalkTwo articles about R posted at the Simple Talk blog in the last few weeks:Visualizing Data with RSQL and R [Read more...]

R Articles at Simple TalkTwo articles about R posted at the Simple Talk blog in the last few weeks:Visualizing Data with RSQL and R [Read more...]

Last week Mango Solutions’ Principal Consultant, Stephanie Locke, presented Analytical Web Services for the RBelgium user group. Check out the full recording of her presentation here: Analytical Web Services : In your day job, you might build some awesome bits … Continue reading → [Read more...]

I’ve just finished teaching the Fall 2015 session of 36-721, Statistical Graphics and Visualization. Again, it is a half-semester course designed primarily for students in the MSP program (Masters of Statistical Practice) in the CMU statistics department. I’m pleased that … Continue reading → [Read more...]

The new SQL Server 2016 is now available as part of the Community Technical Preview program, and as presaged it embeds connectivity with the R language and the big-data statistical algorithms of Revolution R Enterprise. SQL Server 2016 includes two ways of calling R. The first is by embedding R code direcly ... [Read more...]

As shown by the eye tracking lines and circles, there is more on the above screenshot than we can process simultaneously. Visual perception takes time, and we must track where the eye focuses by recording sequence and duration. The "50% off" and the menu items seems to draw the most attention, ... [Read more...]

As shown by the eye tracking lines and circles, there is more on the above screenshot than we can process simultaneously. Visual perception takes time, and we must track where the eye focuses by recording sequence and duration. The "50% off" ... [Read more...]

Next Tuesday I will be giving a talk at EARL 2015 in Boston. The title of my talk is “Mapping Census Data in R”. You can see my slides here:   If you will be attending the conference then I hope to see you there!   The post Slides For My Upcoming Talk: “... [Read more...]

In a previous post, we described how we performed exploratory data analysis (EDA) in real-world log files, as provided by Skroutz.gr, the leading online company in Greece for online price comparison, in the context of Athens Datathon 2015. In the present post we will have a look at the same ... [Read more...]

OpenBLAS 0.2.15 has been released. I’ll be building Rblas.dll for Sandy and Ivy bridges on Windows shortly, and would certainly like to hear from anyone else using OpenBLAS and R on Windows. The post New version of OpenBLAS released appeared first on Strange Attractors. [Read more...]

OpenBLAS 0.2.15 has been released. I’ll be building Rblas.dll for Sandy and Ivy bridges on Windows shortly, and would certainly like to hear from anyone else using OpenBLAS and R on Windows. [Read more...]

Say you have an Amazon EC2 instance running and you want to be able to control your R session running there from your local R session. At heart, this is not a new idea for the R community. You can already control remote R sessions easily with Shiny or ... [Read more...]

Say you have an Amazon EC2 instance running and you want to be able to control your R session running there from your local R session. At heart, this is not a new idea for the R community. You can already control remote R sessions easily with Shiny o... [Read more...]

I was working on making a map in R recently and after an extensive search online, I found a hundred different ways to do it and yet each way didn't work quite right for my data and what I wanted to do. Eventually, I found a way to make it ... [Read more...]

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I prepared the following notes for a consulting client, and I thought they might be of interest to some other people too. Let denote the value of the time series at time , and suppose we wish to fit a trend with correlated errors of the form     where represents the possibly ... [Read more...]

R Articles at Pluralsight The first two articles in a series of posts on R for Business users are available at Pluralsight. R For Business Users Part 1: Importing Data R For Business Users Part 2: Data Cleaning  [Read more...]