American odds are favoured by American bookmakers. The figure quoted is either positive or negative. When American odds are positive, the figure indicates how much money will be won on a $100 wager (this is done for an outcome that is considered less likely to happen than not). For example, a net payout of 4/1 would be quoted as +400. When American odds are negative, the figure indicates how much money must be wagered to win $100 (this is done for an outcome that is considered more likely to happen than not). For example, a net payout of 1/4 would be quoted as -400.