Monday data/statistics link roundup (2/10/14)

February 10, 2014
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I'm going to try Monday's for the links. Let me know what you think. The Guardian is reading our blog. A week after Rafa posts that everyone should learn to code for career preparedness, the Guardian gets on the bandwagon. … Continue reading →

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Define functions with default parameter values in SAS/IML

February 10, 2014
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Define functions with default parameter values in SAS/IML

One of my favorite new features of SAS/IML 12.1 enables you to define functions that contain default values for parameters. This is extremely useful when you want to write a function that has optional arguments. Example: Centering a data vector It is simple to specify a SAS/IML module with a [...]

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Sochi Olympic Medals

February 9, 2014
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Sochi Olympic Medals

For those who are addicted to R and haven’t the time to click the mouse on a web browser you too can still be informed about the results of the 2014 Sochi Winter Olympics. I was inspired by a SO … Continue reading →

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Why I am going to ICOTS9 in Flagstaff, Arizona

February 9, 2014
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Why I am going to ICOTS9 in Flagstaff, Arizona

I was a university academic for twenty years. One of the great perks of academia is the international conference. Thanks to the tax-payers of New Zealand I have visited Vancouver, Edinburgh, Melbourne (twice), San Diego, Fort Lauderdale, Salt Lake City … Continue reading →

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Why I am going to ICOTS9 in Flagstaff, Arizona

February 9, 2014
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Why I am going to ICOTS9 in Flagstaff, Arizona

I was a university academic for twenty years. One of the great perks of academia is the international conference. Thanks to the tax-payers of New Zealand I have visited Vancouver, Edinburgh, Melbourne (twice), San Diego, Fort Lauderdale, Salt Lake City … Continue reading →

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The Statsguys on Data Analytics

February 9, 2014
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The Statsguys on Data Analytics

It's good to see that more and more students of econometrics are taking an interest in "Data Analytics" / "Big Data" /"Data Science" literature. As I've commented previously, there's a lot that we can all learn from each other. Moreover, many of "bound...

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A complicated answer to a simple correlation question

February 9, 2014
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A complicated answer to a simple correlation question

A data analysis surprise party. Simple question If I have correlation matrices each estimated with a month of daily returns, how much worse is the average of six of those compared to the estimate with six months of daily data? Expected answer Do a statistical bootstrap with the returns and compare the standard deviations across … Continue reading →

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What is a Bayes factor?

February 9, 2014
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What is a Bayes factor?

The BayesFactor packageThis blog is a companion to the BayesFactor package in R (website), which supports inference by Bayes factors in common research designs. Bayes factors have been proposed as more principled replacements for common classical statistical procedures such as \(p\) values; this blog will offer tutorials in using the package for data analysis.In this first post, I describe the general logic of Bayes factors using a very simple research…

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Keli Liu and Xiao-Li Meng on Simpson’s paradox

February 9, 2014
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XL sent me this paper, “A Fruitful Resolution to Simpson’s Paradox via Multi-Resolution Inference.” I told Keli and Xiao-Li that I wasn’t sure I fully understood the paper—as usual, XL is subtle and sophisticated, also I only get about half of his jokes—but I sent along these thoughts: 1. I do not think counterfactuals or […]The post Keli Liu and Xiao-Li Meng on Simpson’s paradox appeared first on Statistical Modeling,…

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Bayesian analysis of sensory profiling data, part 2

February 9, 2014
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Bayesian analysis of sensory profiling data, part 2

Last week I made the core of a Bayesian model for sensory profiling data. This week the extras need to be added. That is, there are a bunch of extra interactions and the error is dependent on panelists and descriptors.Note that where last week I pointe...

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Phil 6334: Day #3: Feb 6, 2014

February 9, 2014
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Phil 6334: Day #3: Feb 6, 2014

Day #3: Spanos lecture notes 2, and reading/resources from Feb 6 seminar  6334 Day 3 slides: Spanos-lecture-2 ___ Crupi & Tentori (2010). Irrelevant Conjunction: Statement and Solution of a New Paradox, Phil Sci, 77, 1–13. Hawthorne & Fitelson (2004). Re-Solving Irrelevant Conjunction with Probabilistic Independence, Phil Sci 71: 505–514. Skryms (1975) Choice and Chance 2nd ed. Chapter V and Carnap (pp. 206-211), Dickerson Pub. […]

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A Blast From the Past

February 8, 2014
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A Blast From the Past

Doesn't time fly! Around the end of August 1994 Lief Bluck and I put together a web site for our department. That may not sound very interesting, but let's put things in perspective.Our University didn't have a web site - not many universities did. The...

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“Guys who do more housework get less sex”

February 8, 2014
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“Guys who do more housework get less sex”

Sometimes I have a few minutes where I can work, but I don’t feel like working. So I follow the blogroll, this time from here to here: Sabino Kornrich, Julie Brines, Katrina Leupp. Egalitarianism, Housework, and Sexual Frequency in Marriage American Sociological Review February 2013 vol. 78 no. 1 26-50 doi: 10.1177/0003122412472340 Data are from Wave […]The post “Guys who do more housework get less sex” appeared first on Statistical Modeling,…

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Mugged

February 8, 2014
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Mugged

Rasmus posted a couple of comments on my Christmas-present mug and apparently has started a collection of his own. But, then again, I think the mug galore has hit hard on many (eg here)... I'm going to have to get another one soon, ...

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Detecting seasonality

February 8, 2014
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Detecting seasonality

I occasionally get email asking how to detect whether seasonality is present in a data set. Sometimes the period of the potential seasonality is known, but in other cases it is not. I’ve discussed before how to estimate an unknown seasonal period, and how to measure the strength of the seasonality. In this post, I want to look at testing if a series is seasonal when the potential period is…

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Vintage Years in Econometrics – The 1960′s

February 7, 2014
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Vintage Years in Econometrics – The 1960′s

Remember that saying - "if you can remember the 60's you probably weren't there"? Well, with that said, and continuing from my earlier posts about vintage years for econometrics in the 1930's, 1940's, and 1950's, here's my take on t...

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Outrage of the week

February 7, 2014
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Outrage of the week

Mark Palko passes this one along from high school principal Carol Burris: My music teacher, Doreen, brought me her second-grade daughter’s math homework. She was already fuming over Education Secretary Arne Duncan’s remark about why “white suburban moms” oppose the Common Core, and the homework added fuel to the fire. The problem that disturbed her […]The post Outrage of the week appeared first on Statistical Modeling, Causal Inference, and Social…

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Personal Analytics with RSS Feeds

February 7, 2014
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Personal Analytics with RSS Feeds

I am currently working on a paper on Academic Blogging, from my own experience. And I wanted to do something similar to Stephen Wolfram’s personal analytics of my life. More specifically, I wanted to understand when I do post my blog entries. If I post more entries during office hours, then it should mean that, indeed, I consider my blog as a part of my job (which is something I believe, actually).…

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All else is equal except that one is more equal than the other

February 7, 2014
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The mis-use of "all else being equal" in statistics and much of the social sciences is a disease. The key to diagnosing this abuse is to recognize that there are two modes of "all else being equal". I call it the "design" mode and the "pretend" mode. An example of using "all else being equal" in the design mode is the classic randomization principle. If we run an A/B test…

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2014 SoFiE Financial Econometrics Summer School at Harvard

February 7, 2014
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2014 SoFiE Financial Econometrics Summer School at Harvard

The 2014 Society for Financial Econometrics (SoFiE) Summer School in Financial Econometrics will take place July 28 - August 1 at Harvard University. This is the third annual edition; 2012 and 2013 were highly successful, and I'm certain that 2014 will...

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Bayesian Mugs Galore!

February 7, 2014
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Bayesian Mugs Galore!

Having no personal mug at the department I recently created a Bayesian themed one with the message “Make the Puppies Happy. Do Bayesian Data Analysis.” This is of course a homage to the cover of Johns K. Kruschke’s extraordinary book Doing Baye...

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An xts R Inferno-ism

February 7, 2014
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Another of the all ye entering here. Issue When subscripting an xts object, columns that don’t exist in the object are silently ignored. Example First, create an xts object: xtx <- xts(cbind(a=1:4, b=11:14, c=21:24), order=Sys.Date() + 1:4) which looks like: > xtx a b c 2014-02-07 1 11 21 2014-02-08 2 12 22 2014-02-09 3 […] The post An xts R Inferno-ism appeared first on Burns Statistics.

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knitr in a knutshell tutorial

February 7, 2014
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knitr in a knutshell tutorial

I spent a lot of time this week writing a short tutorial on knitr: knitr in a knutshell. This is my third little tutorial. (The previous ones were a git/github guide and a minimal make tutorial.) I’m pleased with these tutorials. In learning new computing skills, it can be hard to get started. My goal […]

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