This map comes from Danielle Webb at the Globe and Mail, a major Canadian Newspaper. The map visualizes 2011 census data, showing that almost 60% of 20-24 year-olds live at home, and 25% of 25-29 year-olds do the same. The map uses a choropleth based on census districts, where darker means more home-staying twenty-somethings. By not including a technical legend, the map becomes more of qualitative (and perhaps more intuitive) and relative difference. The choice of a Google Map is also one of familiarity.