Posts Tagged ‘ statistics ’

Sorry, you said you want a stats revolution?

February 23, 2009
By
Sorry, you said you want a stats revolution?

ALL ABOUT REVOLUTION COMPUTING’S R DISTRIBUTION Decision Science News was intrigued by a company called REvolution Computing that got some attention of late for spinning their own mix of the R language for statistical computing and giving it away for free. So DSN asked to interview them to see what it’s all about Decision Science

Read more »

Pearson vs. Spearman Correlation Coefficients

February 17, 2009
By
Pearson vs. Spearman Correlation Coefficients

One of the misuses of statistical terminology that annoys me most is the use of the word “correlation” to describe any variable that increases as another variable increases. This monotonic trend seems worth looking for, but it plainly is not what m...

Read more »

Single Letter Frequencies in English

February 15, 2009
By
Single Letter Frequencies in English

Every time that I read a paper that discusses the frequencies of single letters in English, I feel like I should sit down and calculate them for myself from a sample of English text. Today, I finally did. Here are the probabilities and negative log pro...

Read more »

Fitting Legendre (orthogonal) polynomials in R

February 10, 2009
By
Fitting Legendre (orthogonal) polynomials in R

Frederick Novomestky packaged a series of orthogonal polynomials in the orthopolynom R package. However, his functions can not be used "directly" in a statistical model, say in lm(). There is no need to use functions from orthopolynom package, since th...

Read more »

Princeton Graduate Student Housing

February 8, 2009
By
Princeton Graduate Student Housing

For any Princeton graduate students who are interested, here’s the success rate for graduate students applying for school housing. These charts were built using the data from the 2008-2009 Room Draw Statistics pamphlet provided by the Division of Hou...

Read more »

Baby Got Stats!

February 8, 2009
By

I was completely tickled last year with the oh so amusing Statz Rappers. It kept me and my nerdy stats friends laughing for days. Rapping. Stats. The Internet. Good times. But little did I know that rapping about statistics was really just hitting its stride on youtube. This is Why We Plot began my trip

Read more »

If I Had a Text File, I’d Hack Regexes in the Morning

February 4, 2009
By
If I Had a Text File, I’d Hack Regexes in the Morning

Yesterday the topic of academic citation counts came up, so I decided that I should write up some tools for exploring cite counts. The first thing I did was to build a cheap screenscraper in Ruby for pulling citation count information from Google schol...

Read more »

Visualizing Eigenfactors

January 30, 2009
By

These interactive graphics are simply beautiful. And they just so happen to be profoundly informative about the structure of modern science as well. Here’s to the hope that we will see more work from Moritz Stefaner soon that shows how our aesthetic ...

Read more »

MCMCglmm package for R

January 29, 2009
By
MCMCglmm package for R

Jarrod Hadfield published MCMCglmm package on CRAN. The package can fit generalised linear mixed models via MCMC methods. Bellow is the abstract from the vignette. The list of supported models is quite impressive. Nice job Jarrod! This is not the first...

Read more »

R gets some -E-S-P-E-C-T

January 12, 2009
By
R gets some -E-S-P-E-C-T

NEW YORK TIMES STORY ON THE APPEAL OF R (click to view movie) It is no secret that Decision Science News is crazy about the R language for statistical computing. Find out why R is so great in this New York Times article. Then start to teach yourself R with our short series of video

Read more »