Pareto principle Guide, Meaning , Facts, Information and Description
The Pareto principle (also known as the 80-20 Rule, the law of the vital few and the principle of factor sparsity) states that for many phenomena 80% of consequences stem from 20% of the causes. Moreover, among those "top 20" it is also the case that 80% of consequences result from 20% of causes, and so on. Thus, for example, 20% of 20% of 20% is 0.008, or 0.8%, i.e., eight-tenths of one percent, and 80% of 80% of 80% is 51.2%, so 51.2% of consequences come from eight-tenths of one percent of causes.The principle was suggested by management thinker Joseph M. Juran. It was named after the Italian economist Vilfredo Pareto, who observed that 80% of property in Italy was owned by 20% of the Italian population. It is often applied to data such as sales figures (20% of clients are responsible for 80% of sales volume) or organizational productivity applied via aircraft bodies whereby 20% of an aircraft structure provides 80% of the lift (in turn would apply to 20% of individuals in an organization perform 80% of the work).
This is a special case of the wider phenomenon of Pareto distributions.
The Pareto principle is unrelated to Pareto efficiency, which was also introduced by Vilfredo Pareto.
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