Math Quiz: NYT Learning Network

Through Math for America, I am part of an on-going collaboration with the New York Times Learning Network.  My latest contribution, a Test Yourself quiz-question, can be found here:

http://learning.blogs.nytimes.com/2010/09/15/test-yourself-mathseptember-15-2010/

This question was based on a recent study regarding New York’s trains, how often they run on time, and how that measures up with the perception that they run on time; click here to read more.