statistics
Tag archives for statistics
Economic Astronomy: Gender Gaps in Lifetime Earnings
Posted by Chad Orzel on August 10, 2011 There are two recent studies of gender disparities in science and technology (referred to by the faintly awful acronym “STEM”) getting a lot of play over the last few days. As is often the case with social-science results, the data they have aren’t quite the data you would really like to have, and I think…
Neither a Neuroscientist Nor a Statistician
Posted by Chad Orzel on May 31, 2011 A bunch of people I follow on social media were buzzing about this blog post yesterday, taking Jonah Lerher to task for “getting spun” in researching and writing this column in the Wall Street Journal about this paper on the “wisdom of crowds” effect. The effect in question is a staple of pop psychology these…
On the “Hot Hand” in Basketball
Posted by Chad Orzel on May 9, 2011 A little while back, Jonah Lehrer did a nice blog post about reasoning that used the famous study by Gilovich, Vallone and Tversky, The Hot Hand in Basketball (PDF link) as an example of a case where people don’t want to believe scientific results. The researchers found absolutely no statistical evidence of “hot” shooting– a…
Annual Mis-Reporting on Graduation Rates
Posted by Chad Orzel on March 15, 2011 It’s NCAA tournament time, which is time for everybody to break out the moralizing stories about the pernicious aspects of college athletics that they’ve been sitting on since the football season ended. The Associated Press (via the New York Times) clocks in with a particularly discreditable entry, a story on a study of racial disparities…
Benford’s Law of Amazon Rankings
Posted by Chad Orzel on December 31, 2010 Late last year, Matthew Beckler was nice enough to make a sales rank tracker for How to Teach Physics to Your Dog. Changes in the Amazon page format made it stop working a while ago, though, and now Amazon reports roughly equivalent data via its AuthorCentral feature, with the added bonus of BookScan sales figures.…
Simple Answers to Complex Medical Questions
Posted by Chad Orzel on September 1, 2010 There’s a new medical study of the effects of alcohol consumption that finds a surprising result: Controlling only for age and gender, compared to moderate drinkers, abstainers had a more than 2 times increased mortality risk, heavy drinkers had 70% increased risk, and light drinkers had 23% increased risk. A model controlling for former problem…
