The paper published in the Andalusian Journal of Sports Medicine, tries to answer that question so interesting. We analyzed the goals scored in 13 seasons in the first division of the Spanish professional footbal lleague.
As in other professional leagues, there is a clear difference between the top-ranked teams and other competitors. This dynamic hampers the overall quality of the league. There is also an increased in the likelihood that a large number of goals (> 5 goals) in a single game are achieved. This fact causes the distribution of the number of goals per game follows a negative binomial distribution. This means that the goals turn from a random behavior (following a Poisson distribution) to a more chaotic behavior, i.e., with an underlying order difficult to determine.