A Venn diagram can show data sets such as preferences in market research. When sets intersect (overlap), the elements in the intersection are members of both sets. When the sets have no elements in ...

The man who invented the elegant overlapping circle diagrams would have been 180 today. Infographic: Which Flu Strain Is Most Likely To Bring The Apocalypse? H1N1? Bird flu? Swine flu? Confused? Don’t ...