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A Pareto Chart is a quality chart of discrete data that helps identify the most significant types of defect occurrences.

It does this by showing both frequency of occurrences (bar graph) and cumulative total of occurrences (line graph) on a single chart. The type of occurrences are organized on the X-Axis from highest to lowest frequency. Respectively, the left Y-Axis shows frequency of occurrences, while the right Y-Axis shows the total percentage.

Pareto Chart -


For a better understanding of The Pareto Chart 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.