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Pareto Chart - GoLeanSixSigma.com

A Pareto Chart is a bar chart of discrete data that displays the most significant categories of defects in descending order. The chart was named after the Italian economist, Vilfredo Pareto, who discovered the “80/20 Rule.” The Pareto Chart uses the “80/20 Rule” to narrow the focus of process improvement to the 20% of defect categories causing 80% of the process issues.

Pareto Charts display both frequency of occurrences (bar graph) and cumulative percent of occurrences (line graph) on a single chart. The left Y-Axis shows frequency of occurrences, while the right Y-Axis shows the total percentage.

Pareto Chart Template


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 Master Black Belt at GoLeanSixSigma.com, the co-author of The Problem-Solver’s Toolkit and co-host of the Just-in-Time Cafe. For over 30 years, she's helped leading organizations like Amazon, Charles Schwab and Marriott International, Inc. build problem-solving muscles with Lean Six Sigma to achieve their goals.

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