Abstract
The Pareto Principle (also known as the 80-20 rule) states that for many sight, about 80% of the consequences are produced by 20% of the causes. In this article we discuss the Pareto Principle and its importance in real life problems, describe some mathematical model related to it. We tested two sets of real life data to see if the Pareto principle applies to these aspects. For the Forbes list in2017, we found that 20% of the air line in that list own 45% of the sell. And 20% of the automobile company in that list 62% of the all automobile sell In both cases results have a really to the Pareto principle but not perfectly matched.
Keywords: Pareto Principle, sale, automobile companies, airlines, Forbes.
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