New words of 1917

August 6, 2013
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I happened to come across a little book, “Current Glossary: Words Coined Since the War.” Here are some of them: as’pi-rin, n. A white compound used as a drug in the cure of headaches and rheumatism. bob’go, n. A kind of antelope in Africa; its meat is good for food. cat’ta-lo, n. A cross between […]The post New words of 1917 appeared first on Statistical Modeling, Causal Inference, and Social…

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Create your own fine print

August 6, 2013
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Create your own fine print

Note: The winner of the Book Quiz Round 2 was announced on my book blog. Congratulations to the winners. You can get your own copy of Numbersense here. *** A common advice for anyone living in the U.S. is "read...

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Book quiz update, podcast

August 6, 2013
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The second winner of the Book Quiz is Nancy, from Washington DC. Congratulations! Both winners wrote back saying they feel like buying a lottery ticket. The odds of winning that is much lower, be warned. *** Joe Dager, from Business901, and I chatted about Numbersense recently, and the interview will show up soon as a podcast. If you didn't see it last December, he did a very nice interview with…

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Simply Statistics #JSM2013 Picks for Tuesday

August 6, 2013
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It seems like Monday was a big hit at JSM with Nate Silver's talk and all. Rafa estimates that there were about 1 million people there (+/- 1 million). Ramnath Vaidyanathan has a nice summary of the talk and the Q&A … Continue reading →

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Setting axes limits with googleVis

August 6, 2013
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Setting axes limits with googleVis

I posted about the various googleVis axis options for base charts, such as line, bar and area charts earlier, but I somehow forgot to mention how to set the axes limits.Unfortunately, there are no arguments such as ylim and xlim. Instead, the Google Ch...

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Random Variables from a non-Parametric distribution know their limits

August 6, 2013
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Random Variables from a non-Parametric distribution know their limits

You produce a non-parametric distribution. Then you obtain, say, 10 random variables (RV) from this non-parametric distribution- much the same way as you would obtain random variables from a (parametric) normal distribution with stated mean and variance. But unlike the parametric distribution, where our RVs would occur around the mean (our parameter), RVs from a […]

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Google Developers R Programming Video Lectures

August 5, 2013
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Google Developers R Programming Video Lectures

Google Developers recognized that most developers learn R in bits and pieces, which can leave significant knowledge gaps. To help fill these gaps, they created a series of introductory R programming videos. These videos provide a solid foundation for p...

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Calendar-based Sector Strategy

August 5, 2013
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Calendar-based Sector Strategy

I recently came across the Kaeppel’s Sector Seasonality Strategy which is described in Kaeppel’s Corner: Sector Seasonality and updated in Kaeppel’s Corner: Get Me Back, Clarence. Today I want to show how to back-test the Kaeppel’s Sector Seasonality Strategy using the Systematic Investor Toolbox. Following are the strategy rules: Buy Fidelity Select Technology (FSPTX) at […]

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How Much Should Bale Cost Real?

August 5, 2013
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How Much Should Bale Cost Real?

It looks increasingly likely that Gareth Bale will transfer from Tottenham to Real Madrid for a world record transfer fee. Negotiations are ongoing, with both parties keen to get the best deal possible deal with the transfer fee. Reports speculate that this transfer fee will be anywhere in the very wide range of £80m to […]

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How Much Should Bale Cost Real?

August 5, 2013
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How Much Should Bale Cost Real?

It looks increasingly likely that Gareth Bale will transfer from Tottenham to Real Madrid for a world record transfer fee. Negotiations are ongoing, with both parties keen to get the best deal possible deal with the transfer fee. Reports speculate that this transfer fee will be anywhere in the very wide range of £80m to […]

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Evidence on the impact of sustained use of polynomial regression on causal inference (a claim that coal heating is reducing lifespan by 5 years for half a billion people)

August 5, 2013
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Evidence on the impact of sustained use of polynomial regression on causal inference (a claim that coal heating is reducing lifespan by 5 years for half a billion people)

Yu Xie thought I’d have something to say about this recent paper, “Evidence on the impact of sustained exposure to air pollution on life expectancy from China’s Huai River policy,” by Yuyu Chen, Avraham Ebenstein, Michael Greenstone, and Hongbin Li, which begins: This paper’s findings suggest that an arbitrary Chinese policy that greatly increases total […]The post Evidence on the impact of sustained use of polynomial regression on causal inference…

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Still More on the Strange American Estimator: Indirect Inference, MLE and the Particle Filter

August 5, 2013
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In my last post I praised indirect inference (IE) for its ease-of-use: just simulate the model and fit a simple auxiliary model to the simulated and real-world data, after which evaluation of the objective is immediate. In contrast, likelihood analysi...

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Numbersense Pros: Felix Salmon

August 5, 2013
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Numbersense Pros: Felix Salmon

An interview with Felix Salmon by Kaiser Fung

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Simply Statistics #JSM2013 Picks for Monday

August 5, 2013
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I'm sadly not able to attend the Joint Statistical Meetings this year (where Nate Silver is the keynote speaker!) in the great city of Montreal. I'm looking forward to checking out the chatter on #JSM2013 but in the meantime, here are … Continue reading →

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compactr is now on CRAN

August 5, 2013
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compactr is now on CRAN

I've been working on a package called [crayon-53f5fd341b2f0417299765-i/]  that helps create nice-looking plots in R and it is now up on CRAN. You can get it by typing [crayon-53f5fd341b300564286748/] directly into the command line in R. See how it works by typing [crayon-53f5fd341b308671557990-i/]  or reading the details here. Below I describe the basic structure and functions. […]

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Simulate from the multinomial distribution in SAS

August 5, 2013
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Simulate from the multinomial distribution in SAS

This article describes how to generate random samples from the multinomial distribution in SAS. The content is taken from Chapter 8 of my book Simulating Data with SAS. The multinomial distribution is a discrete multivariate distribution. Suppose there are k different types of items in a box, such as a [...]

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Limits of Akaike Information Criteria (AIC)

August 5, 2013
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Limits of Akaike Information Criteria (AIC)

We often use AIC to discern the best model among candidates. Now suppose we have two (non-parametric) models, which use mass points and weights to model a random variable: model A uses 4 mass points to model a random variable (i.e. the height of men in Singapore) model B uses 5 mass points to mode […]

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New issue of Symposium magazine

August 5, 2013
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Symposium magazine (“Where Academia Meets Public Life”) has some fun stuff this month: Learning to Read All Over Again Lutz Koepnick What produces better students – reading in print or reading on-line? The answer is both. The Elusive Quest for Research Innovation Claude S. Fischer Much of what is considered “new research” has actually been […]The post New issue of Symposium magazine appeared first on Statistical Modeling, Causal Inference, and…

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Principally speaking, red or white?

August 5, 2013
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Principally speaking, red or white?

So it's been a while since I posted. Life, summer, stuff, so it goes. But you're not here to listen to me make excuses. You're here to learn about the efficacy of dimension reduction via orthoganol rotations. You just don't know it yet. And how exactl...

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Parts and whole

August 4, 2013
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Parts and whole

The whole may be greater than the sum of the parts, but the whole still needs those parts. A reflective teacher will think carefully about when to concentrate on the whole, and when on the parts. Golf If you were … Continue reading →

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CIO – Big data may build better profile of Australians

August 4, 2013
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CIO – Big data may build better profile of Australians

From: http://www.cio.com.au/article/522550/big_data_may_build_better_profile_australians_statistician_/Information could be used in future censuses, says Jonathan PalmerHamish Barwick (CIO)01 August, 2013Location information from mobile phones cou...

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More rainfall calculations – REML

August 4, 2013
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More rainfall calculations – REML

I wanted to have a look at various REML methods for a long time. The rainfall data seemed a nice example. On top of that, FreshBiostats had a blog post 'Mixed Models in R: lme4, nlme, or both?'. So lme4 it is.The data  As described before; th...

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Sunday data/statistics link roundup (8/4/13)

August 4, 2013
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The $4 million teacher. I love the idea that teaching is becoming a competitive industry where the best will get the kind of pay they really really deserve. I can't think of another profession where the ratio of (if you … Continue reading →

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