Articles, studies and U.S. Census data focusing on wealth inequality rely on the Gini coefficient. How is it calculated, and what does it tell us? Frank Cowell, an economist at the London School of ...

Inequalities that use < or > symbols are plotted with a dashed line to show that the line is not included in the region. Inequalities that use ≤ or ≥ symbols are plotted with a solid line to show that ...

Show values that satisfy an inequality on a set of axes by drawing the line of the corresponding equation and shading the area specified in a question. Include a dashed line for inequalities where the ...