LDA on Ferguson Grand Jury I

December 9, 2014
By
LDA on Ferguson Grand Jury I

The case of Michael Brown, an unarmed black teenager, who was shot and killed on August 9th, by Darren Wilson, a white police officer, in Ferguson has driven public opinion around the globe to the suburb of St. Louis. Motivation The case of Micha...

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LDA on Ferguson Grand Jury I

December 9, 2014
By
LDA on Ferguson Grand Jury I

The case of Michael Brown, an unarmed black teenager, who was shot and killed on August 9th, by Darren Wilson, a white police officer, in Ferguson has driven public opinion around the globe to the suburb of St. Louis. Motivation The case of Michae...

Read more »

LDA on Ferguson Grand Jury I

December 9, 2014
By
LDA on Ferguson Grand Jury I

The case of Michael Brown, an unarmed black teenager, who was shot and killed on August 9th, by Darren Wilson, a white police officer, in Ferguson has driven public opinion around the globe to the suburb of St. Louis. Motivation The case of Michae...

Read more »

LDA on Ferguson Grand Jury I

December 9, 2014
By
LDA on Ferguson Grand Jury I

The case of Michael Brown, an unarmed black teenager, who was shot and killed on August 9th, by Darren Wilson, a white police officer, in Ferguson has driven public opinion around the globe to the suburb of St. Louis. Motivation The case of Michae...

Read more »

LDA on Ferguson Grand Jury I

December 9, 2014
By
LDA on Ferguson Grand Jury I

The case of Michael Brown, an unarmed black teenager, who was shot and killed on August 9th, by Darren Wilson, a white police officer, in Ferguson has driven public opinion around the globe to the suburb of St. Louis. Motivation The case of Michae...

Read more »

amazonish thanks (& repeated warning)

December 8, 2014
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amazonish thanks (& repeated warning)

As in previous years, at about this time, I want to (re)warn unaware ‘Og readers that all links to Amazon.com and more rarely to Amazon.fr found on this blog are actually susceptible to earn me an advertising percentage if a purchase is made by the reader in the 24 hours following the entry on Amazon […]

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Importing Illumina BeadArray data into R

December 8, 2014
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Importing Illumina BeadArray data into R

A colleague needed some help getting Illumina BeadArray gene expression data loaded into R for data analysis with limma. Hopefully whoever ran your arrays can export the data as text files formatted as described in the code below. If so, you can import...

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Steven Pinker on writing: Where I agree and where I disagree

December 8, 2014
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Steven Pinker on writing:  Where I agree and where I disagree

Linguist and public intellectual Steven Pinker recently published an article, “Why Academics Stink at Writing.” That’s a topic that interests me! Like Pinker, I’ve done a lot of writing, both for technical and general audiences. Unlike Pinker, I have not done research on linguistics, but I’ll do my best to comment based on my own […] The post Steven Pinker on writing: Where I agree and where I disagree appeared…

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Marc Bellemare on Social Media

December 8, 2014
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Marc Bellemare on Social Media

Marc Bellemare has been catching my attention recently. On Saturday I had a post that mentioned his talk on "How to Publish Academic Papers". I know that a lot of you have followed this up already.Today, I just have to mention another of his ...

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Genéticamente, no hay tal cosa como la raza puertorriqueña

December 8, 2014
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Genéticamente, no hay tal cosa como la raza puertorriqueña

Editor's note: Last week the Latin American media picked up a blog post with the eye-catching title "The perfect human is Puerto Rican". More attention appears to have been given to the title than the post itself. The coverage and comments on social media have demonstrated the need for scientific education on the topic of

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On deck this week

December 8, 2014
By

Mon: Steven Pinker on writing: Where I agree and where I disagree Tues: Buggy-whip update Wed: The inclination to deny all variation Thurs: The Fallacy of Placing Confidence in Confidence Intervals Fri: Saying things that are out of place Sat: Don’t, don’t, don’t, don’t . . . We’re brothers of the same mind, unblind Sun: […] The post On deck this week appeared first on Statistical Modeling, Causal Inference, and…

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A Tennis Match Graphic

December 8, 2014
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A Tennis Match Graphic

I know you're not thinking about tennis in December (at least those of you north of the equator). I'm generally not either. But this post is really about graphics, and I may have something that will interest you. And remember, the Australian Open and t...

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The direct product (Kronecker product) in SAS

December 8, 2014
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The direct product (Kronecker product) in SAS

There are many ways to multiply scalars, vectors, and matrices, but the Kronecker product (also called the direct product) is multiplication on steroids. The Kronecker product looks scary, but it is actually simple. The Kronecker product is merely a way to pack multiples of a matrix B into a block […]

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Risk as a “Survival Variable”

December 8, 2014
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Risk as a “Survival Variable”

I come across a lot of strategies on the blogosphere some are interesting some are a complete waste of time but most share a common feature: people developing those strategies do their homework in term of analyzing the return but much less attention is paid to the risk side its random nature. I’ve seen comment like “a […]

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Who should write the new NYT chess column?

December 8, 2014
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Matt Gaffney gives these “three essential characteristics” for writing “a relevant, interesting weekly chess column” in 2014: 1. It must be written by someone who is deeply involved in the chess world. Summaries of information that is already available online won’t cut it anymore. And since newspapers can’t afford to send columnists around the world […] The post Who should write the new NYT chess column? appeared first on Statistical…

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Mucking around with maps, schools and ethnicity in NZ

December 8, 2014
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Mucking around with maps, schools and ethnicity in NZ

I’ve been having a conversation for a while with @kamal_hothi and @aschiff on maps, schools, census, making NZ data available, etc. This post documents some basic steps I used for creating a map on ethnic diversity in schools at the census-area-unit level. This “el quicko” version requires 3 ingredients: Census area units shape files (available […]

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Honoring Herman Stekler

December 8, 2014
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Honoring Herman Stekler

The first issue of the IJF for 2015 has just been published, and I’m delighted that it includes a special section honoring Herman Stekler. It includes articles covering a range of his forecasting interests, although not all of them (sports forecasting is missing). Herman himself wrote a paper for it looking at “Forecasting—Yesterday, Today and […]

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"Mastering ‘Metrics"

December 7, 2014
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"Mastering ‘Metrics"

Mastering 'Metrics: The Path From Cause to Effect, by Joshua Angrist and Jörn-Steffen Pischke, is to be published by Princeton University Press later this month. This new book from the authors of Mostly Harmless Econometrics is bound to be w...

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Exercise Solutions for Chapters 1-14 of DBDA2E are now available

December 7, 2014
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Exercise Solutions for Chapters 1-14 of DBDA2E are now available

Exercise Solutions for Chapters 1-14 of DBDA2E are now available at the book's web site.

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The smartest guys in the room

December 7, 2014
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I've just finished reading this book, which tells the story of Enron, the American power company who raised to incredible fame and generated ridiculous amounts of money to its shareholders $-$ mostly by cooking its books, through "creative accounting"....

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Sunday data/statistics link roundup (12/7/14)

December 7, 2014
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A randomized controlled trial shows that using conversation to detect suspicious behavior is much more effective then just monitoring body language (via Ann L. on Twitter). This comes as a crushing blow to those of us who enjoyed the now-cancelled Lie to Me and assumed it was all real. Check out this awesome real-time visualization of

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Subtleties with measurement-error models for the evaluation of wacky claims

December 7, 2014
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Subtleties with measurement-error models for the evaluation of wacky claims

Paul Pudaite writes: In the latest Journal of the American Statistical Association (September 2014, Vol. 109 No. 507), Andrew Harvey and Alessandra Luati published a paper [preprint here] — “Filtering With Heavy Tails” — featuring the phenomenon you had asked about (“…(non-Gaussian) models for which, as y gets larger, E(x|y) can actually go back toward […] The post Subtleties with measurement-error models for the evaluation of wacky claims appeared first…

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How power morcellators inadvertently spread uterine cancer

December 7, 2014
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How power morcellators inadvertently spread uterine cancer

Until a few weeks ago, I’d never even heard of a “power morcellator.” Nor was I aware of the controversy that has pitted defenders of a woman’s right to choose a minimally invasive laparoscopic procedure in removing fibroids—enabled by the power morcellator–and those who decry the danger it poses in spreading an undetected uterine cancer throughout a […]

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