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The Pareto Principle is a quality principle that asserts that the majority of effects come from a minority of causes. AKA the 80/20 rule, 80% of effects come from 20% of causes.

For a better understanding of the Pareto Principle and an overview of Lean Six Sigma, check out our Free Lean Six Sigma Yellow Belt Training, Green Belt Training or Lean Training.

Elisabeth Swan

Elisabeth is a Managing Partner & Executive Advisor at For over 25 years, she's helped leading organizations like Amazon, Charles Schwab and Starwood Hotels & Resorts build problem-solving muscles with Lean Six Sigma to achieve their goals.