July 2010

A robust Hotelling test…

July 12, 2010 | Manos Parzakonis

Recently I was in need of testing a mean vector. I wrote a few lines of code in R and had it done perfectly. Hotelling test is one of the least interesting test to me. never really figured out why… At that time I had some time to search more ... [Read more...]

World Cup 2010 Statistics Plotted with R

July 11, 2010 | C

Opta  agreed to let the UK Guardian Data Blog publish 2010 World Cup Team and Player statistics.  The data is available in a Google Docs spreadsheet.  There are two tabs on this spreadsheet - one is PLAYERS the other is TEAM st...
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using R + ess-remote with screen in emacs

July 11, 2010 | Vinh Nguyen

Dear list, I brought up this issue before but a good solution never arised: being able to use screen on a remote server (so if something goes wrong on my side I can always resume that R session) inside of emacs in order to utilize ESS. The closest thing I ... [Read more...]

CoRe in CiRM [3]

July 10, 2010 | xi'an

Still drudging along preparing the new edition of Bayesian Core. I am almost done with the normal chapter, where I also changed the Monte Carlo section to include specific tools (bridge) for evidence/Bayes factor approximation. Jean-Michel has now moved to the new hierarchical model chapter and analysed longitudinal  datasets ...
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World Government Data Store API (R and Ruby)

July 10, 2010 | C

The UK Guardian Data Blog has great visualizations on the topics of the day - along with with specific references to data sets and online resources in use.  You can find out more about the origins and plans of this and related data sites in t...
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bibtex 0.2-1

July 10, 2010 | romain francois

I've uploaded version 0.2-1 of my bibtex package to CRAN. This release anticipates changes in R 2.12.0, and structures bibtex entries in object of the new class bibentry. The release also fixes various parser and lexer bugs [Read more...]

Visualizing the census

July 9, 2010 | David Smith

Now that the 2010 survey is over, you might be wondering what we can learn from the data when the aggregated results are published. For a good guide to the kinds of questions you'll be able to answer, take a look at StatJump, where you can see tables and charts of ... [Read more...]

Chatfield’s Plots in S-Plus

July 9, 2010 | gjabel

I have recently finished reading the sixth edition of The Analysis of Time Series: An Introduction by Chatfield in our Statistics reading group. Whilst enjoying most of the book I got a little confused when looking at Appendix D: Some … Continue reading → [Read more...]

Funny Math in Governor Approval Ratings

July 9, 2010 | Matt Shotwell

Andrew Gelman wrote today about some erroneous U.S. Governor approval ratings, noting that the ratings for Janet Napolitano sum to 108%. In fact most of these ratings do not sum to 100%. I prepared a clean CSV file of the ratings, making use of R‘s XML library and the readHTMLTable ... [Read more...]

World Bank data plots

July 9, 2010 | prasoonsharma

Couple of weeks ago, I was looking for interesting data sets to play with using R. I came across this post and got inspired to use World Bank data to extract interesting patterns/facts about developing countries. World Bank has 300+ World Development i...
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100 Prisoners, 100 lines of code

July 9, 2010 | Matt Asher

In math and economics, there is a long, proud history of placing imaginary prisoners into nasty, complicated scenarios. We have, of course, the classic Prisoner’s Dilemma, as well as 100 prisoners and a light bulb. Add to that list the focus of this post, 100 prisoners and 100 boxes. In this game, ...
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Core in CiRM [2]

July 8, 2010 | xi'an

We are making slow progress on the normal and regression chapters as we decided to write the package at the same time we revise the chapters… Jean-Michel transformed the variable selection and model choice R codes of the regression chapter into generic functions that will fit within the package. I ...
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Competition: Predicting traffic

July 8, 2010 | David Smith

Here's an interesting competition that may well lend itself to R: the IEEE International Conference on Data Mining is running a contest to find the best way of predicting traffic problems. There are three separate contests: Predicting congestion: a series of measurements from 10 selected road segments is given and the ... [Read more...]
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