The news is full of widely (and wildly) varying estimates of the scale and scope of human trafficking. This is partly because vulnerable individuals are often hidden and are therefore hard to count.

Last week, quantitative minded people everywhere cheered as analysis trumped gut. Nate Silver’s predictions about the Electoral College proved precise and far more accurate than those who insisted the ...

Sampling is the process of collecting some data when collecting it all or analyzing it all is unreasonable. Before addressing why sampling still matters when massive amounts of data are available and ...