Pie Chart of the Pareto Principle (80/20 Rule)

About this example

Vilfredo Pareto's observation that 80% of outcomes often come from 20% of causes — known as the Pareto Principle. A simple two-slice pie that's become shorthand for resource prioritization.

The data

• 80% of outcomes (from 20% of causes) — 80 %
• 20% of outcomes (from 80% of causes) — 20 %

Source

Vilfredo Pareto, Cours d'économie politique (1896).

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