March Madness pools are a form of sports betting based on the annual NCAA Division I men's basketball tournament each spring in the United States.
The process of selecting at-large bids involves subjective judgment of teams' performance over the course of the season, and can be controversial.
The March Madness bracket is the visual representation of all the teams in the tournament and the path they have to follow to the Final Four and the championship game.
Various scoring systems exist to award participants for correctly predicting the results of March Madness games.
[6] Other estimates of the chance of a perfect bracket, accounting for tournament trends (such as higher seeds typically being expected to win), have ranged from 1 in 576 quadrillion to 1 in 128 billion.
[13] Employers have also noticed a change in the behavior of employees during this time: they have seen an increase in the number of sick days used, extended lunch breaks and even the rescheduling of conference calls to allow for more tournament watching.