With this he established the so-called Pareto law according to which economic inequality is inevitable in any society. Dr. Juran applied this concept to the quality, resulting in what is now known as the 80/20 rule. According to this concept, if you have a problem with many causes, we can say that 20% of the causes solve 80% of the problem and solve 80% of causes only 20% of the problem. Therefore, the Pareto analysis is a technique that separates the vital few from the trivial many.

A Pareto chart is used to separate the significant aspects of a problem graphically from the trivial so a team knows where to direct their efforts to improve. Reduce the most significant problems (longer in a graphical Pareto bars) serve more to a general improvement which reduce the smaller. Frequently, one aspect will have 80% of the problems. In other cases, between 2 and 3 aspects they are responsible for 80% of the problems. In relation to the managerial styles of problem solving and decision making (conservative, firefighter, opportunist and integrator, we see how the use of this tool can be an excellent alternative to a manager’s style fireman, who constantly at the time solve problems only shuts down fire, i.e. puts all its effort on many trivial. When is used?) By identifying a product or service for analysis to improve quality.

When there is a need to draw attention to the problem or causes in a systematic manner. Identify opportunities to improve parsing different groupings of data (eg: by product, by segment of the market, geographic area, etc.) To find the major causes of the problems and prioritize solutions to evaluate the results of the changes made to a process (before and after) when data can be classified in categories when the range of each category is important Pareto is a widely used tool for data analysis and is therefore useful in the determination of the root cause during a troubleshooting effort. This allows you to see what are the biggest problems, allowing them to groups set priorities. In typical cases, the few (steps, services, items, problems, causes) are responsible for most of the negative impact on the quality. If we focus our attention on these vital few, we can obtain the greatest potential gains for our efforts to improve the quality. A team can use the Pareto chart for various purposes during a project to achieve improvements: to analyze the causes for studying the results to plan a Las Graficas Pareto improvement are particularly valuable as before and after photos to show what progress has been achieved. As such, the Pareto chart is a simple but powerful tool. How is it used?