• Puzzle 1. Suppose I have a box of jewels. The average value of a jewel in the box is \$10. I randomly pull one out of the box. What’s the probability that its value is at least \$100? • Puzzle 2. Suppose I have a box full of numbers—they can be arbitrary real numbers. Their average is zero,…
Perspectives of the regular solid
BibliOdyssey has posted some very old perspective drawings of polyhedra and other geometric shapes.
London Day Trip Stop 3: British Museum
Thinking I was being too obvious, particularly having just told Twitter I was in Russell Square, I tweeted a photo of the base of a pillar as a clue to my next location. I hadn’t intended this to be a stop on my trip as I’ve been before but, having had lunch by the fountain…
A Dismal Performance from the Dismal Science
Paul J. Ferraro and Laura O. Taylor ask, “Do Economists Recognize an Opportunity Cost When They See One? A Dismal Performance from the Dismal Science” One expects people with graduate training in economics to have a deeper understanding of economic processes and reasoning than people without such training. However, as others have noted over the past 25 years, modern graduate…
The Body Counter
There’s a very interesting article in Foreign Policy on a man called Patrick Ball who uses statistics as a human rights tool. Could the movements of refugees have been random? No, Ball said. He had also plotted killings of Kosovars and found that both phenomena occurred at the same times and in the same places…
Causa Efecto by Ana Soler
[youtube url=http://www.youtube.com/watch?v=NoK79YmbGao]
London Day Trip Stop 2: Russell Square
Having visited the British Library on stop 1, I bought a sandwich for lunch and walked down to Russell Square. The clue I tweeted to my location (below) was nicely ambiguous, looking like a fairly standard London scene. David Ault, winner of the photo clue competition at stop 1, attempted a “CSI ‘Zoom… Enhance…’” on…