Nationwide lottery investigation by PennLive, Columbia School of Journalism

PennLive, a news site from Central Pennsylvania, worked with the Columbia School of Journalism to survey state lotteries nationwide, looking for people who won “too many” times.  You can read some of the background in this article and see a state-by-state infographic in this article.  They show how the problems that have been highlighted here and there are national in scope.

The reporters did a lot of legwork; this was a big effort.  They got some mathematical assistance with the analysis from Philip Stark from UC Berkeley.  The underlying math was developed in the paper Philip and I wrote with Richard Arratia from USC and Lawrence Mower from the Palm Beach Post, and the calculations can be done using this jupyter notebook from github.