The Art of R Programming review – part 8

April 12, 2013
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We're almost done with the book review! I've received hundreds of fan mail imploring that I continue, so I will. After which, I'll put the book reviews on hold for a bit and continue with my journey down the API road. That journey will also explore som...

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New U.S and World Population Clock from the Census Bureau

April 12, 2013
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View THE CENSUS BUREAU’S NEW POPULATION CLOCK to see an interactive projection of the population, including the rate of births, deaths and net migration. Explore tables on the most populous countries in the world, as well as the most populous state...

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Health economics and sex workers

April 12, 2013
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Today, the British media (eg here) have given some attention to a report commissioned by Westminster council into the condition of sex workers, with particular reference to the current economic recession.One of the main conclusions is that, because of ...

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Too tired to mock

April 12, 2013
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Someone sent me an email with the subject line “A terrible infographic,” and it went on from there: “Given some of your recent writing on infovis, I thought you might get a kick out of this . . . I’m certainly sympathetic to their motivations, but some of these plots do not aid understanding… To [...]The post Too tired to mock appeared first on Statistical Modeling, Causal Inference, and Social…

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Travis CI for R! (not yet)

April 12, 2013
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Travis CI for R! (not yet)

A few days ago I wrote about Travis CI, and was wondering if we could integrate the testing of R packages into this wonderful platform. A reader (Vincent Arel-Bundock) pointed out in the comments that Travis was running Ubuntu that allows you to instal...

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Le Monde puzzle [#815]

April 11, 2013
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Le Monde puzzle [#815]

The last puzzle was as follows: Take a card stack with 32 cards and divide it into five non-empty piles. A move consists in doubling a pile size by taking card from a single and larger pile. Is it possible to recover the original stack by repeatedly using moves? Same question for 100 cards and five […]

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Dropbox & R Data

April 11, 2013
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I'm always looking for ways to download data from the internet into R. Though I prefer to host and access plain-text data sets (CSV is my personal favourite) from GitHub (see my short paper on the topic) sometimes it's convenient to get data st...

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The price is right

April 11, 2013
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The price is right

On the reddit statistics forum, I recently posted a link to my tutorial on Bayesian statistics.  One of my fellow redditors drew my attention to this article, which uses pymc to do a Bayesian analysis of The Price is Right.  He or she asked h...

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Individual vs. Group Incentive for Weight Loss

April 11, 2013
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A new Annals of Internal Medicine article describes a study that compares two employer-sponsored financial incentive programs for promoting weight loss among obese employees. I first read about the article at the Pacific Standard. The study design is a randomized controlled prospective trial. The two programs are as follows: Program 1. Obese employees are given […]

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Continuing conflict over conflict statistics

April 11, 2013
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Continuing conflict over conflict statistics

Mike Spagat sends along a serious presentation with an ironic title: 18.7 MILLION ANNIHILATED SAYS LEADING EXPERT IN PEER–REVIEWED JOURNAL: AN APPROVED, AUTHORITATIVE, SCIENTIFIC PRESENTATION MADE BY AN EXPERT He’ll be speaking on it at tomorrow’s meeting of the Catastrophes and Conflict Forum of the Royal Society of Medicine in London. All I can say [...]The post Continuing conflict over conflict statistics appeared first on Statistical Modeling, Causal Inference, and…

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Reflecting on the end of history illusion illusion

April 10, 2013
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Reflecting on the end of history illusion illusion

A while back Jon Sutton at The Psychologist asked my opinion on the end of history illusion. This was sparked by an interesting Science paper by Quoidbach, Gilbert and Wilson. Blogger and mathematician Jordan Ellenberg had written a blog post...

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R and social media

April 10, 2013
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R is a piece of software, but it is also a community. Help community The most visible aspect of the R community is help.  This is also the most useful to new users.  The initial sense of cooperation with R was driven mainly by people helping each other. You don’t need to actively participate in […]The post R and social media appeared first on Burns Statistics.

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“Proposition and experiment”

April 10, 2013
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“Proposition and experiment”

Anna Lena Phillips writes: I. Many people will not, of their own accord, look at a poem. II. Millions of people will, of their own accord, spend lots and lots of time looking at photographs of cats. III. Therefore, earlier this year, I concluded that the best strategy for increasing the number of viewers for [...]The post “Proposition and experiment” appeared first on Statistical Modeling, Causal Inference, and Social Science.

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Climate Science Day on Capitol Hill

April 10, 2013
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Climate Science Day on Capitol Hill

A few weeks ago I participated in the fourth annual Climate Science Day organized by the ASA and a host of other professional and scientific societies. There’s a nice write up of the event written by Steve Pierson over at … Continue reading →

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How to generate multiple samples from the multivariate normal distribution in SAS

April 10, 2013
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How to generate multiple samples from the multivariate normal distribution in SAS

A SAS customer asks: How do I use SAS to generate multiple samples of size N from a multivariate normal distribution? Suppose that you want to simulate k samples (each with N observations) from a multivariate normal distribution with a given mean vector and covariance matrix. Because all of the [...]

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Finding the Distribution Parameters

April 10, 2013
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Finding the Distribution Parameters

This is a brief description on one way to determine the distribution of given data. There are several ways to accomplish this in R especially if one is trying to determine if the data comes from a normal distribution. Rather than focusing on hypothesis testing and determining if a distribution is actually the said distribution [...]

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Highway Safety Agency goes rogue

April 9, 2013
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Highway Safety Agency goes rogue

A reader sends me to Adam Obeng, who did the dirty work deconstructing a set of charts by the U.S. National Highway Traffic Safety Administration on his blog. Here's an example of these charts: Aside from the sneaker chart, they...

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The guy behind me on line for the train . . .

April 9, 2013
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The guy behind me on line for the train . . .

. . . sounded exactly like a David Mamet character. I mean, exactly. Or like Eric Bogosian doing a David Mamet character. I only wish I had a good ear for dialogue and could get it down for you. OK, we don’t use the word fuck on this blog but I could substitute something like [...]The post The guy behind me on line for the train . . . appeared…

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Speculative Sea Level Explorer: Reshaping the Coastline by Climate Change

April 9, 2013
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Speculative Sea Level Explorer: Reshaping the Coastline by Climate Change

The Speculative Sea Level Explorer by interaction designer Benedikt Groß investigates how the coastline and the territory of the world will be reshaped by a rise of the sea level due to Global Warming. While the simulation, captured as a serie...

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Freshman hordes regress to the mean

April 9, 2013
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Freshman hordes regress to the mean

More nones, no nunsFor several years I have been following one of the most under-reported stories of the decade: the fraction of college freshmen who report no religious preference has tripled since 1985, from 8% to 24%, and the trend is accelerating.T...

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Recently and not-so-recently in the sister blog

April 9, 2013
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Recently and not-so-recently in the sister blog

Pushback from the elites Insides and essences: Early understandings of the non-obvious The post Recently and not-so-recently in the sister blog appeared first on Statistical Modeling, Causal Inference, and Social Science.

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My talks in DC and Baltimore this week

April 9, 2013
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U.S. Treasury, Office of Financial Research, Tues 9 Apr afternoon (I don’t actually know exactly when or in what room): Parameterization and Bayesian Modeling — Johns Hopkins University, Department of Biostatistics, 4pm Wed 10 Apr, room W2030 School of Public Health: Little data: How traditional statistical ideas remain relevant in a big-data world At the [...]The post My talks in DC and Baltimore this week appeared first on Statistical Modeling,…

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How to set axis options in googleVis

April 9, 2013
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How to set axis options in googleVis

Setting axis options in googleVis charts can be a bit tricky. Here I present two examples where I set several options to customise the layout of a line and combo chart with two axes. The parameters have to be set in line with the Google Chart Tools A...

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