# Pareto Principle

The Pareto principle states that, for many events, roughly 80% of the effects come from 20% of the causes.

The Pareto principle states that, for many events, roughly 80% of the effects come from 20% of the causes.

### Takeaways

-   Inputs and outputs are often not evenly distributed.

-   A large group may contain only a few meaningful contributors to the desired outcome.

-   Focus the majority of effort on the areas that will bring the largest benefits to the most users.

### Origins

  Its origins stem back to Vilfredo Pareto, an economist who noticed 80% of Italy’s land was owned by 20% of the population. Though it might seem vague, the 80/20 way of thinking can provide insightful and endlessly applicable analysis of lopsided systems, including user experience strategy.

  Source

### Further Reading

###
    Good UX is not just about minimizing clicks

  Avi Siegel | UX Collective

###
    Prioritize Quantitative Data with the Pareto Principle

  Evan Sunwall | Nielsen Norman Group

###
    The 80/20 Rule in User Experience

  Arin Bhowmick | Medium

###
    Applying the Pareto Principle to the User Experience

  Jeff Sauro | Measuring U

###
    The Pareto Principle and Your User Experience Work

  Interaction Design Foundation

###
    Pareto Principle on Wikipedia

  Wikipedia

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Source: https://lawsofux.com/pareto-principle/
Category: Theory
Tags: research