In a regular graph, each point (or “node”) has the same number of lines (or “edges”) connected to it. In a 2-regular graph, every node sits on precisely two edges; it has “degree 2.” In a 600-regular ...

And because bar graphs are everywhere, psychologists from Wellesley College wanted to determine how well people can actually read and interpret bar graphs. You know where this is headed. Turns out one ...

At a press conference in New York City on Saturday, Mayor Bill de Blasio brought along a bar graph that he said represented the evidence necessary to show that a lethal outbreak of Legionnaires ...