I bought a lottery ticket yesterday. I hardly ever buy them. The last time I did I lost a dollar. Actually, every time I've bought a ticket I've lost. Yesterday I was at the local gas station in line behind a bloke who had a comprehensive folder ...
Monthly Archives: June 2011
Beating Kenneth French Small – High
With 148 pageviews over the last 24 hours, my post Kenneth French Gift to the Finance World has been popular relative to most of my other posts. I think the popularity is due to Kenneth French’s notoriety and the amazing outperformance of Small...
Mapping SNPs to Genes for GWAS Enrichment Analysis
There are several tools available for conducting a post-hoc analysis of GWAS data looking for enrichment of significant SNPs using literature or pathway based resources. Examples include GRAIL, ALLIGATOR, and WebGestalt among others (see SNPath R Pac...
R 2.13.1 scheduled for July 8
The R Core team announced today that the next update to R, version 2.13.1, will be released on July 8. Core team member Peter Dalgaard noted: The 2.13.0 release has been quite solid, but some people expect an x.y.1 to roll out on larger installations for the next academic year. Of course, there have also been a sampling of...
Cash Might be Your Tail Risk
Just like James Montier Ode to the Joy of Cash and David Merkel Got Cash?, I think cash is an extremely powerful tool. Of the 3 ingredients (land, labor, and capital) of the economy, capital (cash) is most scarce at the end of a crisis or recessi...
Calculate LCM of ‘n’ consecutive natural numbers using R
Well I shall hit the nail right on the head and not beat around the bush. I am taking programming lessons on R from my pro bro(Utkarsh Upadhyay) who agreed on teaching me only if I would disseminate my learning(a paranoia all the open-source advocates ...
Don’t stop being a statistician once the analysis is done
I received an email from the Royal Statistical Society asking if I wanted to submit a 400-word discussion to the article, Vignettes and health systems responsiveness in cross-country comparative analyses by Nigel Rice, Silvana Robone and Peter C. Smith. My first thought was No, I can’t do it, I don’t know anything about health systems
Clarke and Ainsworth’s BIOENV and BVSTEP (and BIO-BIO etc…)
Nonmetric Multidimensional Scaling (NMDS) plot of vegetation sample dissimilarities with best correlating environmental variables (left) and species (right) plotted as vectors (datasets "varespec" and "varechem" from the package ...
Winsorization
Winsorization replaces extreme data values with less extreme values. But why Extreme values sometimes have a big effect on statistical operations. That effect is not necessarily a good effect. One approach to the problem is to change the statistical operation — this is the field of robust statistics. An alternative solution is to just change … Continue reading...
Kenneth French Gift to the Finance World
Kenneth French gives one of the best gifts to the finance world at his website http://mba.tuck.dartmouth.edu/pages/faculty/ken.french/data_library.html. I am surprised I have waited so long to write a post about this wonderful resource. Aft...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
