This simple analysis reveals striking differences between the rich and most of the rest of the population.

BBC: The Wealth Gap - Inequality in Numbers

Researchers criticized its analysis for including sentences of probation, which they argued amplified the demographic differences.

WSJ: Wide Racial Divide in Sentencing

One recent analysis had to discard 75% of its research because it had failed to account for differences between the backgrounds and academic histories of pupils attending the schools.

ECONOMIST: Education