Aborting a SAS/IML program upon encountering an error

March 3, 2014
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Aborting a SAS/IML program upon encountering an error

A colleague sent me an interesting question: What is the best way to abort a SAS/IML program? For example, you might want to abort a program if the data is singular or does not contain a sufficient number of observations or variables. As a first attempt would be to try [...]

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Talk at CIMAT, Guanajuato, Mexico

March 3, 2014
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I will be back in Guanajuato, Mexico, this week, to visit Victor Rivero. And I will give a talk at the Centro de Investigacion en Matematicas (CIMAT) this Wednesday on “Multivariate Archimax Copulas“. The slides are already online. (there...

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NewsVis.org, The Directory of News Visualizations

March 3, 2014
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NewsVis.org, The Directory of News Visualizations

When I was in Portland over the holidays a few weeks ago, I noticed a visualization in the local newspaper, The Oregonian. I had never heard of that before, nor of Mark Friesen, who created it. Wondering how many visualizations I might be missing, I decided to build a website that would collect them all: newsvis.org.

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Questions for anyone who thinks Frequentists either (A) make sense, or (B) are “objective”.

March 2, 2014
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Here are two formulations of the same problem. The mathematics is identical in either case, but the verbiage surrounding it illustrates entirely different statistical philosophies. The first is taken from this presentation (slide 8) but is essentially ...

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Fun with flags

March 2, 2014
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Fun with flags

The Scotland independence referendum is approaching (relatively fast), and so are all sorts of related, very important issues, like what would the new UK flag be, if Scotland decide to leave?The Guardian has taken a poll and apparently these two are th...

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Significance tests and frequentist principles of evidence: Phil6334 Day #6

March 2, 2014
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Significance tests and frequentist principles of evidence: Phil6334 Day #6

Slides (2 sets) from Phil 6334 2/27/14 class (Day#6). D. Mayo: “Frequentist Statistics as a Theory of Inductive Inference” A. Spanos “Probability/Statistics Lecture Notes 4: Hypothesis Testing” Filed under: P-values, Phil 633...

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Double-"Blind" Refereeing is Misguided in Principle and a Charade in Practice

March 2, 2014
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I view the title of this post as almost self-evident. But lots of do-gooders out there disagree, touting double-blind refereeing as somehow promoting "fairness."(1) Misguided in principle: One never makes more-informed decisions (or predictions, or inf...

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What is it with Americans in Olympic ski teams from tropical countries?

March 2, 2014
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Every time I hear this sort of story: Morrone—listed at 48 years old, which would have made her the oldest Olympic cross-country skier of all time by seven years—didn’t even show up for the 10K women’s classic on Feb. 13, claiming injury. (She was the only one of the race’s 76 entrants who didn’t start.) […]The post What is it with Americans in Olympic ski teams from tropical countries? appeared…

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BusinessNewsDaily Reference: What is Statistical Analysis?

March 2, 2014
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BusinessNewsDaily Reference: What is Statistical Analysis?

From: http://www.businessnewsdaily.com/6000-statistical-analysis.htmlByChad Brooks, BusinessNewsDaily Contributor   |   February 28, 2014 12:07am ETIn an effort to organize their data and predict future trends based on the info...

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Simple Pharmacokinetics with Jags

March 2, 2014
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Simple Pharmacokinetics with Jags

In this post I want to analyze a first order pharmocokinetcs problem: the data of study problem 9, chapter 3 of Rowland and Tozer (Clinical pharmacokinetics and pharmacodynamics, 4th edition) with Jags. It is a surprising simple set of data, but still ...

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The Statistics behind “Verification by Multiplicity”

March 2, 2014
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The Statistics behind “Verification by Multiplicity”

There’s a new post up at the ninazumel.com blog that looks at the statistics of “verification by multiplicity” — the statistical technique that is behind NASA’s announcement of 715 new planets that have been validated in the data from the Kepler Space Telescope. We normally don’t write about science here at Win-Vector, but we do […] Related posts: “I don’t think that means what you think it means;” Statistics to…

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Short Review: the War of Art by Steven Pressfield

March 2, 2014
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The War of Art: Winning the Inner Creative Battle by Steven Pressfield Pressfield is the author of several bestsellers. The War of Art is a 12 step self-help support group for procrastinators, a biological and psychological disection of procrastination...

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Short Review: the War of Art by Steven Pressfield

March 2, 2014
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The War of Art: Winning the Inner Creative Battle by Steven Pressfield Pressfield is the author of several bestsellers. The War of Art is a 12 step self-help support group for procrastinators, a biological and psychological disection of procrastination...

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March Madness in the Reading Department

March 2, 2014
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March Madness in the Reading Department

It's time for the monthly round-up of recommended reading material.Gan, L. and J. Jiang, 1999. A test for global maximum. Journal of the American Statistical Association, 94, 847-854.Nowak-Lehmann, F., D. Herzer, S. Vollmer, and I. Martinez-Zarzosa, 20...

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Oldies but Goldies: Statistical Graphics Books

March 2, 2014
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Oldies but Goldies: Statistical Graphics Books

I just wanted to plug for three classical books on statistical graphics that I really enjoyed reading. The books are old (that is, older than me) but still relevant and together they give a sense of the development of exploratory graphics in general ...

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Short Review: Writing Tools: 50 Essential Strategies for Every Writer

March 1, 2014
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This is the first of perhaps three short book reviews.  Certain basics of writing I go over with almost every student. Organization, content, paragraphs and sentences. Roy Peter Clark's Writing Tools: 50 Essential Strategies for Every Writer covers m...

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Short Review: Writing Tools: 50 Essential Strategies for Every Writer

March 1, 2014
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This is the first of perhaps three short book reviews.  Certain basics of writing I go over with almost every student. Organization, content, paragraphs and sentences. Roy Peter Clark's Writing Tools: 50 Essential Strategies for Every Writer covers m...

Read more »

C++11 versus R Standalone Random Number Generation Performance Comparison

If you are writing some C++ code with the intent of calling it from R or even developing it into a package you might wonder whether it is better to use the pseudo random number library native to C++11 or the R standalone library. On the one hand users of your package might have an […] The post C++11 versus R Standalone Random Number Generation Performance Comparison appeared first on…

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Lines and Circles and Logistic Regression

March 1, 2014
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Lines and Circles and Logistic Regression

Euclidean geometry, formalized in Euclid's Elements about 2,300 years ago, is in many ways a study of lines and circles.  One might think that after more than two millennia, we have moved beyond such basic shapes particularly in a realm such as da...

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Cosma Shalizi gets tenure (at last!) (metastat announcement)

March 1, 2014
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Cosma Shalizi gets tenure (at last!) (metastat announcement)

News Flash! Congratulations to Cosma Shalizi who announced yesterday that he’d been granted tenure (Statistics, Carnegie Mellon). Cosma is a leading error statistician, a creative polymath and long-time blogger (at Three-Toad sloth). Shalizi wrote an early book review of EGEK (Mayo 1996)* that people still send me from time to time, in case I hadn’t […]

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“We are moving from an era of private data and public analyses to one of public data and private analyses. Just as we have learned to be cautious about data that are missing, we may have to be cautious about missing analyses also.”

March 1, 2014
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Stephen Senn writes: For many years now I [Senn] have been making the point that obtaining a license to market a drug should carry with it the obligation to share the results with interested parties. . . . Amongst those misunderstanding the issues, are many who work in the pharmaceutical industry. A common assumption is […]The post “We are moving from an era of private data and public analyses to…

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Fitting models to long time series

March 1, 2014
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Fitting models to long time series

I received this email today: I recall you made this very insightful remark somewhere that, fitting a standard arima model with too much data, ie. a very long time series, is a bad idea. Can you elaborate why? I can see the issue with noise, which compounds the ML estimation as the series gets too long. But is there anything else? I’m not sure where I made a comment about…

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On Getting Tenure

March 1, 2014
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Attention conservation notice: Navel-gazing by a middle-aged academic. I got tenure a few weeks ago. (Technically it takes effect in July.) The feedback from the department and university which accompanied the decision was gratifyingly positive, a...

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