Daylight savings time reduces the variance of sunrise time (at the expense of increasing the variance of sunset time).
What do grad students in math do all day?
From Nate Kornell blogging at Psychology Today, we learn how little math US college students really know. (Via TechCrunch.)
Jason Davies gives us a demonstration of from random polygon to ellipse.
Chance Magazine interviews Persi Diaconis.
Mikola Lysenko has written a series of posts on Stephan Rafler’s “SmoothLife”, a generalization of Conway’s Game of Life to continuous domains and curved surfaces.
Some interesting election data analysis: Dave Troy’s The Real Republican Adversary? Population Density. (Via Atlantic Cities.)
CrossValidated has a roundup of favorite “data analysis” cartoons.