The Pareto principle, also known as the “80/20 rule,” states that 80% of the effects come from 20% of the causes. This principle can be applied to various fields, including economics, management, and sports.

In the context of horse racing, the Pareto principle can be used to analyse the performance of jockeys and trainers. Specifically, it suggests that 80% of the wins in horse racing come from the top 20% of jockeys and trainers.

For example, if there were 100 jockeys competing in a horse race, the top 20 jockeys would be expected to win 80% of the races. Similarly, if there were 50 trainers, the top 10 trainers would be expected to win 80% of the races.

It’s important to note that the Pareto principle is not a hard and fast rule, and there can be variations in the distribution of wins among jockeys and trainers. However, it can be a useful tool for identifying the most successful individuals in horse racing and potentially making more informed betting decisions based on their past performance.