The concentration principle refers to a belief that most of a salesperson's sales, costs, and profits come from a relatively small proportion of customers and products.

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The concentration principle, also known as the Pareto Principle or 80/20 rule, suggests that a large portion of effects come from a small portion of causes, such as sales and profits coming from a small number of customers or products.

The Concentration Principle Refers to a Belief That Most of a Salesperson's