80/20 Rule (The Pareto principle) fr....

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80/20 Rule (The Pareto principle)

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aka the law of the vital few and the principle of factor sparsity, states that 80% of the effects comes from 20% of the causes. Dramatic improvements can be achieved by identifying the 20% of users, customers, activities, products or processes that account for the 80% of contribution to profit and maximizing the attention applied to them. [Wikipedia]

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