The Pareto Distribution is a statistical concept that describes a phenomenon where a small number of items account for a large portion of a total. Named after the Italian economist Vilfredo Pareto, it is often illustrated by the "80/20 rule," which suggests that roughly 80% of effects come from 20% of causes. This distribution is commonly observed in various fields, such as economics, wealth distribution, and resource allocation. In a Pareto Distribution, the probability of an event decreases as the size of the event increases. This means that while there are many small occurrences, there are few large ones. The distribution is characterized by a power-law relationship, making it useful for modeling phenomena like income distribution, where a small percentage of the population holds a significant portion of wealth.