hadley/adv-r — pull request #535 by johnfrombluff (2014-06-18 07:13:50+00:00)
Title: Update Subsetting.rmd

I couldn't really parse Q1 of the short quiz. Does my update reflect what you intended to say? And thanks for a great resource, and also MUCH thanks to your publisher for allowing this resource to remain online after publication of the book!