Pareto Chart: When to use it

The Quality Toolbook > Pareto Chart > When to use it

When to use it | How to understand it | Example | How to do it | Practical variations

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When to use it

• Use it when selecting the most important things on which to focus, thus differentiating between the 'vital few' and the 'trivial many'.
• Use it after improving a process, to show the relative change in a measured item.
• Use it when sorting a set of measurements, to visually emphasize their relative sizes.
• Use it, rather than a Bar Chart or Pie Chart to show the relative priority of a set of numeric measurements.

Fig. 1. Using the Pareto Chart in problem solving

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