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[80-20 Pareto Principle] 80% of the effects come from 20% of the causes

[80-20 Pareto Principle] 80% of the effects come from 20% of the causes [80-20 Pareto Principle] 80% of the effects come from 20% of the causes
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[This is not the original text from the author]

The Pareto precept (also known as the 80/20 rule, the law of the vital few, or the principle of factor sparsity) is an empirical phenomenon observed in some areas that states that, for many events, roughly 80% of the outcome (outputs) come from 20% of the causes (inputs).

The 80-20 axiom is frequently used in business and economics, but the concept can be applied to many field—such as sports, wealth distribution, spending habits, and even criminology.

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Source:  Vilfredo Pareto first introduced this concept in the 1897 book "Political Economy course. Professed at the University of Lausanne" (original title in French : " Cours d'Économie Politique. Professé a l'Université de Lausanne").

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Examples (4)

7

Quality Management

The 80/20 law is a fundamental tool in quality management. It allows to :

  • Prioritize problems according to the number of occurrences
  • Set priorities in dealing with problems.

In other words, acting on 20% of causes allows to solve 80% of the problem. The pareto is useful to identify which cause to act on first in order to significantly improve the situation, analyze the frequency of problems or defects in a process or broad causes by examining their individual components.

By ochialyt | 11/08/2020

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1

Software development: 80% of software crashes are linked to 20% of bugs.

By coexist | 14/08/2020

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1

Distribution of wealth: The first observation made by Pareto himself, at the end of the 19th century in Italy: 20% of the people hold 80% of the wealth.

By WenU | 14/08/2020

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Clothing : You use 20% of your clothes 80% of the time

By IrinaB | 14/08/2020

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