In Oct. 2011, respondents were shown the same group of symbols and asked to identify the symbol associated with Islam. Just 42% answered correctly (Crescent and Star, #2 in the graphic.) About a third ...

Proportional symbols can be added to graphs to show information about different places. The graph below plots life expectancy against income for each country. It also shows population size. Each ...

Although it is not always necessary to begin the scale of a line graph at zero, in this case because the graph was shown to the general public, narrowing the scale to begin at 400,000 probably ...

Inequalities that use ≤ or ≥ symbols are plotted with a solid line to show that the line is included in the region. For example, this graph shows the inequality \(x \textless -1\).