A Pareto Chart (also known as a Pareto Diagram) is a bar chart that re-orders the categories so they are rank-ordered from the largest total occurrences to the smallest.

In process analysis, this helps identify the most frequently occurring problems or defect – or separate the vital few from the useful many.

The correct ranking for the Pareto chart categories from left to right would be from highest to lowest.

When You Should Use a Pareto Chart (Pareto Diagram)

  • See Pareto Analysis for a fuller discussion.
  • When analyzing the frequency of root cause data and you want to focus on the most significant contributors (the vital few).
  • When you want to understand broad cause by looking at the component pieces.
  • Very effective way to share a lot of information quickly.

How to Make a Pareto Chart (Pareto Diagram)

See the article here on how to make a Pareto Chart.

Pareto Chart (Pareto Diagram) Example

Pareto charts can be easily created by tallying a check sheet, making a bar chart out of it, and re-ordering it.

Pareto Chart


Analysis

See Pareto Analysis

Also see Problem Identification. Pareto in daily lives, Solomon’s Pareto

Pareto Chart (Pareto Diagram) Videos

Six Sigma Green Belt Pareto Chart (Pareto Diagram) Questions

Question: When in the process of trying to identify the Critical X’s for a LSS project a Belt creates a(n) _____________ because frequently it is 20% of the inputs that have an 80% impact on the output.

(A) Pareto Chart
(B) FMEA
(C) Np Chart
(D) X-Y Diagram

Answer:

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Question: Which of the following tools can be used to identify and quantify the source of a problem?

(A) Affinity diagram
(B) Control chart
(C) Pareto chart
(D) Quality function deployment

Answer:

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Contributors

Comments (7)

A pareto chart tells us those occurances that make up 80% of the cumulative total which are the “significant many” to focus on identifying root cause.

A well constructed histogram should tell you categories that make up the total of all occurances and the rank order of those categories.

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