Statistics

Statistics Blogs

Probability approximations

January 28, 2015
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This week’s resource post lists notes on probability approximations. Do we even need probability approximations anymore? They’re not as necessary for numerical computation as they once were, but they remain vital for understanding the behavior of probability distributions and for theoretical calculations. Textbooks often leave out details such as quantifying the error when discussion approximations. The […]

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3 YEARS AGO: (JANUARY 2012) MEMORY LANE

January 28, 2015
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3 YEARS AGO: (JANUARY 2012) MEMORY LANE

MONTHLY MEMORY LANE: 3 years ago: January 2012. I mark in red three posts that seem most apt for general background on key issues in this blog. January 2012 (1/3) Model Validation and the LLP-(Long Playing Vinyl Record) (1/8) Don’t Birnbaumize that Experiment my Friend* (1/10) Bad-Faith Assertions of Conflicts of Interest?* (1/13) U-PHIL: “So you want to do a philosophical analysis?” (1/14) “You May Believe You […]

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Check your return types when modeling in R

January 27, 2015
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Check your return types when modeling in R

Just a warning: double check your return types in R, especially when using different modeling packages. We consider ourselves pretty familiar with R. We have years of experience, many other programming languages to compare R to, and we have taken Hadley Wickham’s Master R Developer Workshop (highly recommended). We already knew R’s predict function is … Continue reading Check your return types when modeling in R → Related posts: R…

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Limits of statistics, and by extension data science, as illustrated by Deflate-gate

January 27, 2015
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Limits of statistics, and by extension data science, as illustrated by Deflate-gate

A number of readers sent me Warren Sharp's piece about the ongoing New England Patriots' deflate-gate scandal (link to Slate's version of this) so I suppose I should say something about it. For those readers who are not into American football, the Superbowl is soon upon us. New England, one of the two finalists, has been accused of using footballs that are below the weight requirements on the rulebook, hence…

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More data, less accuracy

January 27, 2015
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Statistical methods should do better with more data. That’s essentially what the technical term “consistency” means. But with improper numerical techniques, the the numerical error can increase with more data, overshadowing the decreasing statistical error. There are three ways Bayesian posterior probability calculations can degrade with more data: Polynomial approximation Missing the spike Underflow Elementary numerical integration algorithms, […]

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Trial on Anil Potti’s (clinical) Trial Scandal Postponed Because Lawyers Get the Sniffles (updated)

January 27, 2015
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Trial on Anil Potti’s (clinical) Trial Scandal Postponed Because Lawyers Get the Sniffles (updated)

Trial in Medical Research Scandal Postponed By Jay Price DURHAM, N.C. — A judge in Durham County Superior Court has postponed the first civil trial against Duke University by the estate of a patient who had enrolled in one of a trio of clinical cancer studies that were based on bogus science. The case is […]

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Wine for Breakfast: Consumption Occasion as the Unit of Analysis

January 26, 2015
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Wine for Breakfast: Consumption Occasion as the Unit of Analysis

If the thought of a nice Chianti with that breakfast croissant is not that appealing, then I have made by point: occasion shapes consumption. Our tastes have been fashioned by culture and shared practice. Yet, we often ignore the context and run our an...

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Bayesian predictions for Super Bowl XLIX

January 26, 2015
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Bayesian predictions for Super Bowl XLIX

Last fall I taught an introduction to Bayesian statistics at Olin College. My students worked on some excellent projects, and I invited them to write up their results as guest articles for this blog. Here is the first article of the series:Predicting...

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Nassim Taleb Graphic

January 25, 2015
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Nassim Taleb Graphic

This arrived a couple weeks ago from Nassim Taleb. Regardless of where your view falls on the black swan spectrum, I hope you'll like the graphic. One hallmark of a good graphic is that it repays careful study, as with a good map (which is a good ...

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Big Analytics

January 25, 2015
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Big Analytics

Technology Predictions for 2015 For 2015, Bing predicts the same three technologies for all continents to be in the first …Continue reading →

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