# Posts

### November 12, 2014

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People who bought Alexandre Grothendieck: A Mathematical Portrait from Amazon also bought some nice-looking Japanese chalk which I’ve seen referred to as dream chalk and praised on MathOverflow. (And a bunch of math books, but you probably expected that.) Mathematicians, … Continue reading →

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Emily Robinson writes: Brian Nosek, Eric Luis Uhlmann, Raphael Silberzan, Amy Sommer, Kaisa Snellman, David Robinson, Raphael Silberzahn, and I have just launched a second crowdsourcing data analysis project following the success of the first one. In the crowdsourcing analytics approach, multiple independent analysts are recruited to test the same hypothesis on the same data set […]
The post Crowdsourcing Data Analysis 2: Gender, Status, and Science appeared first on Statistical
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### November 11, 2014

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11:14 PM | back in Gainesville (FL)

Today, I am flying to Gainesville, Florida, for the rest of the week, to give a couple of lectures. More precisely, I have actually been nominated the 2014 Challis lecturer by the Department of Statistics there, following an impressive series of top statisticians (most of them close friends, is there a correlation there?!). I […]

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11:07 PM | Una casa con utopia

E poi succede così, all'improvviso, mentre parli con una conoscente di come vanno le cose, di come procede l'acquisto della casa, della gioia e speranza di avere quella casa tutta per sé, di come è stata fatta la ricerca escludendo a priori determinate zone della città... perché troppo care! Ed è qui che il mio inconscio fa riemergere quel pallino che spesso metto da parte: il costo delle case.Quante volte mi è stato chiesto perché non
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10:04 PM | Minimal Math Concepts

I have been following this blog on Tumblr (Minimal Math Concepts) for a long time and I’ve just realized I haven’t told you about it, yet. Obviously, this is about to change exactly NOW. The blog presents extremely used and … Continue reading →

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9:05 PM | Crypto Word Search II

I recently published a crypto word search puzzle: a word search puzzle where all the letters are encrypted by a substitution cypher. The answer to such a puzzle is a word or a phrase formed by those decrypted letters that are not in the hidden words. The puzzle I posted was easy. It can be […]

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6:50 PM | Making screencasts: The talking head

In this video I go under the hood to show how a "talking head" screencast is made. This is one where it's just a voiceover and lecture slides. This gets technical, but it has ties to the overall pedagogical framework I outlined in a previous video.

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4:44 PM | Alt Banking in Huffington Post #OWS

Great news! The Alt Banking group had a piece published today in the Huffington Post entitled With Economic Justice For All, about our hopes for the next Attorney General. For the sake of the essay, we coined the term “marble columns” to mean the opposite of “broken windows.” Instead of getting arrested for nothing, you […]

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Responding to a comment from Thomas Lumley (who asked why MRP estimates often seem to appear without any standard errors), I wrote: In political science, MRP always seems accompanied by uncertainty estimates. However, when lots of things are being displayed at once, it’s not always easy to show uncertainty, and in many cases I simply […]
The post The history of MRP highlights some differences between political science and epidemiology appeared first on Statistical Modeling, Causal
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10:03 AM | The Renaissance Road Show – November 2014

If you happen to be in Nürnberg tomorrow evening (Wed 12 Nov) I shall be babbling on about Christoph Clavius in the Nicolaus Copernicus Planetarium (in German) at 7:00pm MET. This is an updated version of the lecture I held … Continue reading →

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Ariel Procaccia and Jonathan Goldman of Carnegie Mellon University have taken it upon themselves to make fair division problems easier to solve with a flashy new website called Spliddit (eyy, fuhgeddaboudit). Someone comes up to you at a party, finds out you’re a mathematician, and there’s an awkward silence. Odds are good that you decide to break... Read more »

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12:05 AM | Jeopardy! link roundup

The Jeopardy! Tournament of Champions begins today. Here’s a quick roundup of some Jeopardy!-related links I’ve come across recently: From Gawker, How a geek cracked the Jeopardy! code. The “geek” in question is Roger Craig, who built a tool to … Continue reading →

### November 10, 2014

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Mark Chang, author of Paradoxes in Scientific Inference and vice-president of AMAG Pharmaceuticals, has written another book entitled Principles of Scientific Methods. As was clear from my CHANCE review of Paradoxes in Scientific Inference, I did not find much appeal in this earlier book, even after the author wrote a reply (first posted on this […]

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11:00 PM | Pensiero critico, pensiero wikipediano

Di fronte a una notizia, approfondisci!Usa la logica! Ragiona! Fatti domande!Controlla e confronta le fonti!Sii scettico.Non fidarti neppure del sottoscritto:Sii Wikipediano!Variazione su un motto più o meno diffuso su web, giusto per ribadire l'importanza dell'educazione alla cultura scientificaPer approfondire: Eleonora Degano, Pietro Centorrino

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7:26 PM | New Mersenne primes not discovered

The Great Internet Mersenne Prime Search, the premier distributed-computing prime finding initiative, has reported that $M_{32582657} = 2^{32,582,657}-1$, the 44th Mersenne prime to be discovered, is also the 44th Mersenne Prime in numerical order. It was found by Steven Boone and Curtis Cooper in 2006 (Cooper also discovered the current largest prime as reported here in February), but until... Read more »

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4:04 PM | Help wanted

I’m looking for people to help with some miscellaneous tasks. I don’t expect one person to do everything, but if you’re excellent at any of the following and interested in small projects please let me know. CSS / responsive design WordPress customization Emacs customization Advanced LaTeX Data cleaning and visualization Python (miscellaneous automation scripts) I […]

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2:21 PM | Illegal Business Controls America

The other day I wrote: After encountering the Chicago-cops example I was going to retitle this post, “The psych department’s just another crew” in homage to the line, “The police department’s just another crew” from the rap, “Who Protects Us From You.” But, just to check, I googled that KRS-One rap and it turns out […]
The post Illegal Business Controls America appeared first on Statistical Modeling, Causal Inference, and Social Science.

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2:00 PM | On deck this week

Mon: Illegal Business Controls America Tues: The history of MRP highlights some differences between political science and epidemiology Wed: “Patchwriting” is a Wegmanesque abomination but maybe there’s something similar that could be helpful? Thurs: If you do an experiment with 700,000 participants, you’ll (a) have no problem with statistical significance, (b) get to call it […]
The post On deck this week appeared first on Statistical Modeling, Causal Inference,
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1:18 PM | Rasmus’ socks fit perfectly!

Following the previous post on Rasmus’ socks, I took the opportunity of a survey on ABC I am currently completing to compare the outcome of his R code with my analytical derivation. After one quick correction [by Rasmus] of a wrong representation of the Negative Binomial mean-variance parametrisation [by me], I achieved this nice fit… […]

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12:17 PM | Bitcoin provocations

Yesterday at the Alt Banking meeting we had a special speaker and member, Josh Snodgrass (not his real name), come talk to us about Bitcoin, the alternative “cryptocurrency”. I’ll just throw together some fun and provocative observations that came from the meeting. First, Josh demonstrated how quickly you can price alternative currencies, by giving out […]

### November 09, 2014

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11:14 PM | Statistics slides (4)

Here is the fourth set of slides for my third year statistics course, trying to build intuition about the likelihood surface and why on Earth would one want to find its maximum?!, through graphs. I am yet uncertain whether or not I will reach the point where I can teach more asymptotics so maybe I […]

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9:52 PM | Welcome to Westdeutschland

(Week 1 of the challenge. Sorry for those looking for TeX/MathML related stuff. Sometimes, there are more urgent things, you know?)
25 years ago today, the wall fell in Berlin, opening up Germany, opening up Europe. Admittedly, I …

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6:39 PM | Links for November 9

Pierre Cartier wrote a long profile of Grothendieck for the new journal Inference: International Review of Science. Jonathan Touboul wrote a paper The hipster effect: why nonconformists all look the same. Here’s apopular summary by Gabe Bergado at Mic. Basically, … Continue reading →

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3:42 PM | Writing to You

At the end of August I discovered an app that changed my Sundays. This app is called Lettrs, and I have shared some of my letters with you on the post: World Post Day. Since that post I have written letters every Sunday, … Continue reading →

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Differences Between Econometrics and Statistics: that’s the title of the talk I’ll be giving at the econometrics workshop at noon on Monday. At 4pm in the same place, I’ll be speaking on Stan. And here are some things for people to read: For “Differences between econometrics and statistics”: Everyone’s trading bias for variance at some […]
The post “Differences Between Econometrics and Statistics” (my talk this Monday at the
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9:12 AM | The length of a 2048 game

Presumably many readers have seen and played the 2048 game, in which one slides tiles in different directions across a grid, causing certain pairs of tiles to combine with each other when their sum is correct (in this case, when the sum is a power of two):Or if you get bored with it there are many other variations, some of which have different combining rules, for instance there's one where tiles only combine when their sum is a Fibonacci number. I have the impression this all started with
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### November 08, 2014

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11:14 PM | no more car talk

When I first came to the US in 1987, I switched from listening to the French public radio to listening to NPR, the National Public Radio network. However, it was not until I met both George Casella and Bernhard Flury that I started listening to “Car Talk”, the Sunday morning talk-show by the Magliozzi brothers […]

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6:18 PM | bird-made 3-D density

Filed under: pictures Tagged: bird cloud, England, Gretna Green, starling, The Guardian

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3:02 PM | Aunt Pythia’s advice

Holy crap! Aunt Pythia is in love with a new knitting pattern and has just completed her first reversible “flaming hat”: And that’s all I got today, folks. Just kidding! I’m here for you guys, of course! Let’s dig in. But before I forget, please think of something titillating, reversible, and scrumptious to ask Aunt […]