by Do you know the Pareto law?
No… then you probably know the law of 80-20, don’t you? you probably thought that this law was more of an urban legend than a true statistical law. Fault …
First of all Pareto is the name of an Italian economist Vilfredo Pareto .
According to Wikipedia: “The Pareto principle , also called Pareto’s law , 80-20 principle or even 80-20 law , is an empirical phenomenon observed in certain fields: about 80% of the effects are the product of 20% of the causes. . It has been applied to areas like quality control . It is often considered that the phenomena for which this principle is verified follow a particular form of Pareto distribution ”.
The idea of this post is to illustrate very simply (in less than 2 minutes) this law by using Tableau:
