Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

The Pareto Principle, also known as the 80-20 rule, is a powerful concept that can transform your approach to data analysis. This principle states that roughly 80% of effects come from 20% of causes.

The 80/20 Rule, also known as the Pareto Principle, is a guiding concept in project management. The rule posits that 80% of results stem from 20% of efforts. This principle has far-reaching ...

The Pareto Principle says that around 80 percent of the effects arise from around 20 percent of the causes. In business, a rule of thumb is that 80 percent of output is produced by 20 percent of the ...