what is a pareto diagram

August 03, 2026

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What is a Pareto Chart? Quality Glossary Definition: Pareto chart Also called: Pareto diagram, Pareto analysis Variations: weighted Pareto chart, comparative Pareto charts A Pareto chart is a bar graph. The lengths of the bars represent frequency or cost (time or money), and are arranged with longest bars on the left and the shortest to the right. The Pareto principle may apply to fundraising, i.e., 20% of the donors contributing towards 80% of the total. The Pareto principle (also known as the 80:20 rule, the law of the vital few and the principle of factor sparsity[1][2]) states that, for many outcomes, roughly 80% of consequences come from 20% of causes (the "vital few"). [1] In 1941, management consultant Joseph M. Juran developed ... Human data improves models, models lift people. Pareto advances the signal that keeps the loop turning. The Pareto Principle, also known as the 80-20 rule, is a concept that many have adopted for their life and time management. It is the idea that 20% of the effort, or input, leads to 80% of the results or output. The point of this principle is to recognize that most things in life are not distributed evenly. Learn how Pareto analysis identifies the most impactful factors in business, saving time by addressing key issues efficiently. Discover steps to create a Pareto chart. For related background details, please refer to our report on semi trailer light wiring diagram. Pareto chart A Pareto chart of titanium investment casting defects A Pareto chart is a type of chart that contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line.