It may look like a flower, but this is actually a new Venn diagram-- one that for the first time manages to represent 11 sets of data. Venn diagrams are a simple and elegant way to represent the ...
A Venn diagram captioned: "In a survey of 250 European travelers, 93 have traveled to Africa, 155 have traveled to Asia, and 70 have traveled to both of these continents, as illustrated in the Venn ...