## Econometric Game, 2014

April 15, 2014
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I've blogged about The Econometric Game previously - see here, here,  and here.It's April, so the Game is on again - today and the next two days, to be specific. You can check out he details, as they become available, at this site.Good luck to all...

## Video Tutorial – Rolling 2 Dice: An Intuitive Explanation of The Central Limit Theorem

$Video Tutorial – Rolling 2 Dice: An Intuitive Explanation of The Central Limit Theorem$

According to the central limit theorem, if random variables, , are independent and identically distributed, is sufficiently large, then the distribution of their sample mean, , is approximately normal, and this approximation is better as increases. One of the most remarkable aspects of the central limit theorem (CLT) is its validity for any parent distribution of […]

## Timid medical research

April 15, 2014
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Cancer research is sometimes criticized for being timid. Drug companies run enormous trials looking for small improvements. Critics say they should run smaller trials and more of them. Which side is correct depends on what’s out there waiting to be…Read more ›

## Conventions, novelty and the double edge

April 15, 2014
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This chart from Reuters is making the rounds on Twitter today. Quickly, tell me whether the Gun Law in Florida did well or poorly. That of course is the entire purpose of the chart. *** If you are like me,...

## When you believe in things that you don’t understand

April 15, 2014
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This would make Karl Popper cry. And, at the very end: The present results indicate that under certain, theoretically predictable circumstances, female ovulation—long assumed to be hidden—is in fact associated with a distinct, objectively observable behavioral display. This statement is correct—if you interpret the word “predictable” to mean “predictable after looking at your data.” P.S. […]The post When you believe in things that you don’t understand appeared first on Statistical…

## The Most Important Unexplained Coincidence in Statistics

April 15, 2014
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The exponential family of distributions is important in Statistics because all the common distributions are of this type, and by the Pitman-Koopman theorem, they are exactly the family of distributions which has useful sufficient statistics. By an amaz...

## The Guardian – Big data and open data: what’s what and why does it matter?

April 15, 2014
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From: http://www.theguardian.com/public-leaders-network/2014/apr/15/big-data-open-data-transform-governmentBoth types of data can transform the world, but when government turns big data into open data it's especially powerfulJoel Gurin, New York U...

## googleVis 0.5.1 released on CRAN

April 15, 2014
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GoogleVis 0.5.1 was released on CRAN yesterday. New Features New functions gvisSankey, gvisAnnotationChart, gvisHistogram,gvisCalendar and gvisTimeline to support the new Google charts of the same names (without 'gvis'). New demo Trendlines showing how...

## Generating tables in LaTeX

April 14, 2014
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Typing tables in LaTeX can get messy, but there are some good tools to simplify the process. One I discovered this week is tablesgenerator.com, a web-based tool for generating LaTeX tables. It also allows the table to saved in other formats including HTML and Markdown. The interface is simple, but it does most things. For complicated tables, some additional formatting may be necessary.     Similar functionality is available via…

## Bayes Pharma 2014 – nearly there…

April 14, 2014
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We're nearly done with (most of) the preparation for Bayes Pharma 2014. We've received quite some abstracts for the contributed talks \$-\$ different topics but in general very interesting work, I thought.We've managed to secure several sponsorship \$-\$ w...

## Causal Inference in Health, Economic and Social Sciences

April 14, 2014
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The programme of the forthcoming UK Causal Inference Meeting "Causal Inference in Health, Economic and Social Sciences" is just out. The short conference will be at the end of the month (28th and 29th of April) at the University of Cambridge.I ind...

## Phil 6334: Notes on Bayesian Inference: Day #11 Slides

April 14, 2014
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A. Spanos Probability/Statistics Lecture Notes 7: An Introduction to Bayesian Inference (4/10/14) Spanos lecture 7: An Introduction to Bayesian Inference from jemille6 Filed under: Bayesian/frequentist, Phil 6334 class material, Statistics

## Transitioning to Stan

April 14, 2014
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Kevin Cartier writes: I’ve been happily using R for a number of years now and recently came across Stan. Looks big and powerful, so I’d like to pick an appropriate project and try it out. I wondered if you could point me to a link or document that goes into the motivation for this tool […]The post Transitioning to Stan appeared first on Statistical Modeling, Causal Inference, and Social Science.

## Example 2014.4: Hilbert Matrix

April 14, 2014
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Rick Wicklin showed how to make a Hilbert matrix in SAS/IML. Rick has a nice discussion of these matrices and why they might be interesting; the value of H_{r,c} is 1/(r+c-1). We show how to make this matrix in the data step and in R. We also show t...

## On deck this week

April 14, 2014
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Mon: Transitioning to Stan Tues: When you believe in things that you don’t understand Wed: Looking for Bayesian expertise in India, for the purpose of analysis of sarcoma trials Thurs: If you get to the point of asking, just do it. But some difficulties do arise . . . Fri: One-tailed or two-tailed? Sat: Index […]The post On deck this week appeared first on Statistical Modeling, Causal Inference, and Social…

## Frequentists vs. Bayesians on the Exploding Sun

April 14, 2014
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Time for something light.  Check out xkcd.com, "A webcomic of romance, sarcasm, math, and language," written by a literate former NASA engineer.  Really fine stuff.  Thanks to my student M.D. for introducing me to it.  Here's one on...

## Public Universities Should Use Open Source Software

April 14, 2014
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The Homeless Econometrician: Black Box SoftwareChoosing to go open source is a big deal.  It means that when asking for help or new improvements you are dealing with a highly active and generous user community which enjoys helping instead of a cor...

## Summary of new features in SAS/IML 12.1

April 14, 2014
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I enjoy blogging about new functionality in the SAS/IML language because I can go into more depth and provide more complicated examples than the SAS/IML documentation. Today's article is a summary of all of my posts about features that were added to SAS/IML 12.1, which shipped in August 2012 as […]

## Review: Manuel Lima, The Book of Trees

April 14, 2014
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Trees. They’re everywhere. And not just in the physical world, but in data visualization and knowledge representation as well. This is not a new phenomenon, it goes back thousands of years. Manuel Lima’s new book, The Book of Trees, gives an overview. Setting Expectations This review is an example of priming. The first time I […]

## Edmond Malinvaud on the Contributions of the Cowles Commission

April 14, 2014
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"A father cannot expect more than to see his son take up his business and find new ways of making it flourish. Cowles econometricians of the forties are truly the fathers of present day econometricians and, like successful fathers, have good reason to ...

## Exploring US healthcare data

April 13, 2014
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A few days ago, the Centers for Medicare and Medicaid Services (CMS) released some unprecedented data on the US healthcare system. The data consists of 9 million rows showing how much each doctor in the US charged Medicare, for what, and how much Medicare paid out. It doesn't quite cover everything (for example, services with less than 11 beneficiaries were removed for privacy reasons), but its the best thing we've…

## Law-Breaking Econometricians

April 13, 2014
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I don't follow Lars P. Syll's blog, but the other day I was led there by a Twitter tweet. Lars begins his recent post, "Forecasting Alchemy", with the following statement:'In New York State, Section 899 of the Code of Criminal Procedure provides that p...

## Open Science Through R

April 13, 2014
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There's so much being written about R these days, and justifiably so. If you use R for your econometrics, you should also keep in mind that its applicability is far wider than statistical analysis. A big HT to the folks at Quandl for leading ...