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Spread betting was invented by Charles K. McNeil, a mathematics teacher from Connecticut who became a bookmaker in Chicago in the 1940s. [5] In North America, the gambler usually wagers that the difference between the scores of two teams will be less than or greater than the value specified by the bookmaker, with even money for either option.
The most popular way of betting is by laying or getting points.
A variant of over-under betting, known as Under Over, [5] is a dice game played at various festivals. The object of the game is to predict whether the dice will roll to a total of under 7, over 7, or at 7. The game is typically played with 2 dice. A player typically places a wager on one of three spaces. These spaces are:
McNeil's invention, the point spread, revolutionized sports betting by introducing a method of wagering on the margin of victory between competing teams. This system, more commonly used in football and basketball, aims to level the playing field by creating a form of handicap between the favorite team and the underdog .
Calculation of probability (risk) vs odds. In statistics, odds are an expression of relative probabilities, generally quoted as the odds in favor.The odds (in favor) of an event or a proposition is the ratio of the probability that the event will happen to the probability that the event will not happen.
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Fractional odds are written a − b (a/b or a to b), meaning a winning bettor will receive their money back plus a units for every b units they bet. Decimal odds are a single value, greater than 1, representing the amount to be paid out for each unit bet. For example, a bet of £40 at 6 − 4 (fractional odds) will pay out £40 + £60 = £100.
A half (halftime) bet applies only to the score of the first or second half. This bet can be placed on the spread (line) or over/under. This can also be applied to a specific quarter in American football or basketball, a fewer number of innings in baseball, or a specific period in hockey. In-play betting. In-play betting, or live betting, is a ...