The first type of betting system used by many sports betting houses is multiple regressions. This is a system where historical data is used to create a series of results. As a general rule, the more information you have the more accurate your results will be, and while you can never predict a game with 100% accuracy because there are always undetermined agents (human beings), you can predict to a fairly high degree of proficiency as long as you are able to have enough data on hand to anticipate the game. Professional sports betting gamblers who make their living betting on sporting events use multiple regressions as the primary way to predict the odds, consistently using historical data such as the wins, losses, home game versus away game records, win/loss streaks, injuries, and more over the course of a teams’ career to determine the outcomes.
Statistical anomalies are another type of sports betting system used, and basically boil down to deviations from the common rule that give you a competitive advantage. Again, this is generally only used by professionals considering the fact that in order to find these anomalies and exploit them you have to have access to many years’ worth of data regarding players and team statistics. Sports betting based on statistical anomalies is incredibly challenging, and requires a complete historical background of the team or player in question in order to spot any anomalies that might be statistically used to determine the outcome. It is an incredibly complex sports betting process, and is definitely not for beginners.