We have placed cookies on your device to help make this website better. You can adjust your cookie settingsotherwise we'll assume you're okay to continue. Privacy Policy. Home Search In. Previous Fields Gender Female. Profile Information Location southampton hampshire. Gutted im going to miss this one sounds like a great place to go, next year I will make sure i book my holiday round the gp dates.

How is this possible? In the case of a coin toss, there are factors that may sway the coin, pushing it more towards landing on heads or tails. The coin has many imperfections, such as grooves, and even the design of the coin itself, which shape its journey through the air. These imperfections, when interacting with air, can indeed result in the coin more commonly landing on one side, as apposed to the other.

Even how the coin is flipped may be an influencing actor, or how humid the temperature is. Yes, the influence will be so small that a person flipping the coin a dozen times will hardly notice. But, study the coin toss over hundreds of hours, and a pattern begins to emerge.

If using this data, analysing it, and applying it, the theory of probability makes guessing heads or tales somewhat easier. Making a quick guess on one team, or the other, is all good and well. Its fun, entertaining, and a good way to perhaps make a few extra dollars. The short answer is; it would, to a degree. The long answer is; an unexpected injury could render much of the analysis meaningless, in one fell swoop.

This article explains the mathematics of making a book in the simpler case of the former event. For the second method, see Parimutuel betting. It is important to understand the relationship between fractional and decimal odds. Multiplying both a and b by the same number gives odds equivalent to a-b. Decimal odds are a single value, greater than 1, representing the amount to be paid out for each unit bet.

The equivalent decimal odds are 2. Hence, fractional odds of a-1 ie. In considering a football match the event that can be either a 'home win', 'draw' or 'away win' the outcomes then the following odds might be encountered to represent the true chance of each of the three outcomes:. These odds can be represented as implied probabilities or percentages by multiplying by as follows:. The bookmaker, in his wish to avail himself of a profit, will invariably reduce these odds. Consider the simplest model of reducing, which uses a proportional decreasing of odds.

For the above example, the following odds are in the same proportion with regard to their implied probabilities :. Examining how he potentially achieves this:. In reality, bookmakers use models of reducing that are more complicated than the model of the "ideal" situation. Bookmaker margin in English football leagues decreased in recent years. When a punter bettor combines more than one selection in, for example, a double , treble or accumulator then the effect of the overround in the book of each selection is compounded to the detriment of the punter in terms of the financial return compared to the true odds of all of the selections winning and thus resulting in a successful bet.

To explain the concept in the most basic of situations an example consisting of a double made up of selecting the winner from each of two tennis matches will be looked at:. In Match 1 between players A and B both players are assessed to have an equal chance of winning. The situation is the same in Match 2 between players C and D. In a fair book in each of their matches, i. However, a bookmaker would probably offer odds of for example on each of the two possible outcomes in each event each tennis match.

This results in a book for each of the tennis matches of The decimal odds of a multiple bet is often calculated by multiplying the decimal odds of the individual bets, the idea being that if the events are independent then the implied probability should be the product of the implied probabilities of the individual bets. This represents an implied probability of Thus the overround has slightly more than doubled by combining two single bets into a double.

This is why bookmakers offer bets such as Lucky 15 , Lucky 31 and Lucky 63 ; offering double the odds for one winner and increasing percentage bonuses for two, three and more winners. In general, for any accumulator bet from two to i selections, the combined percentage overround of books of B 1 , B 2 , In settling winning bets either decimal odds are used or one is added to the fractional odds: this is to include the stake in the return.

The place part of each-way bets is calculated separately from the win part; the method is identical but the odds are reduced by whatever the place factor is for the particular event see Accumulator below for detailed example.

All bets are taken as 'win' bets unless 'each-way' is specifically stated. Non-runners are treated as winners with fractional odds of zero decimal odds of 1. Fractions of pence in total winnings are invariably rounded down by bookmakers to the nearest penny below. Calculations below for multiple-bet wagers result in totals being shown for the separate categories e.

Each-Way multiple bets are usually settled using a default " Win to Win, Place to Place " method, meaning that the bet consists of a win accumulator and a separate place accumulator Note: a double or treble is an accumulator with 2 or 3 selections respectively. However, a more uncommon way of settling these type of bets is " Each-Way all Each-Way " known as " Equally Divided ", which must normally be requested as such on the betting slip in which the returns from one selection in the accumulator are split to form an equal-stake each-way bet on the next selection and so on until all selections have been used.

Double [11] [12]. Note: " Win to Win, Place to Place " will always provide a greater return if all selections win, whereas " Each-Way all Each-Way " provides greater compensation if one selection is a loser as each of the other winners provide a greater amount of place money for subsequent selections. Treble [11] [12]. Accumulator [11] [12]. Note: 'All up to win' means there are insufficient participants in the event for place odds to be given e. The only 'place' therefore is first place, for which the win odds are given.

Trixie , Yankee , Canadian , Heinz , Super Heinz and Goliath form a family of bets known as full cover bets which have all possible multiples present. Examples of winning Trixie and Yankee bets have been shown above. The other named bets are calculated in a similar way by looking at all the possible combinations of selections in their multiples. Note: A Double may be thought of as a full cover bet with only two selections. Should a selection in one of these bets not win, then the remaining winners are treated as being a wholly successful bet on the next 'family member' down.

Unfortunately, bettors have no sure-fire way of knowing precisely which bets have positive expected value. As mentioned earlier, books set their lines based on decades of experience and substantial financial and human capital resources. A sportsbook operator uses this vast intellectual and financial wealth to create a line that an average bettor cannot realistically replicate with nearly the same accuracy. If a bettor wants to make money long term, they should make looking dissecting expected value a part of their process.

Here are a few more tips that will help you do just that:. Lakers all received outsized attention from the media and sports fans in general. This contrarianism extends to not just teams, but sports and leagues themselves. When everyone at the sportsbook focuses on the Red Zone channel, the best value might very well be and usually is on the TV no one else is watching. This sensation has carried over to the growing number of local sports betting markets.

Most sportsbooks are owned by large, multi-national conglomerates that keep lines fairly consistent between markets, but value bettors should consider their local sportsbooks home teams when considering a bet, especially if they see value on their opponents. Along with nationally popular franchises, bettors tend to love betting on the best teams.

Underdogs cover point spreads just about as often as favorites. That being said, people pay far more attention to teams at the top of their league than those at the bottom, and betting dollars inherently flow toward the top because of this. But that means that underdogs can sneak away extra value if bettors take the time to weigh their worth as the masses fawn over the heavy favorites.

Though bettors should consider the values of both favorites and underdogs, more often than not, neither is worth a bet. Once again, sportsbooks have a large advantage. On an NFL Sunday, many bettors will try their luck at every game of the day. Just like savvy shoppers may buy produce at one store and deli meats at another, sharp bettors shop around for the best lines.

This is part of why sharps and the general sports betting public clamor for deep, competitive marketplaces that permit a dozen or more sportsbook licenses. Though opening lines are still on better footing than anything an average bettor could assign, initial values have not yet been molded by the sharps and later the masses to the form of their greatest efficiency or best value. After the sharps and general public get through it, the value is usually lower than when it began.

Only if you want a chance to break even long term. The sportsbook has every conceivable advantage, which is compounded further by the vig. The best and, for all intents and purposes, only way to counter is to try to find value bets. You and your bank account will be much better off doing so. Gambling problem? About Contact. This site contains commercial content. What is EV? Cost of the Vig Virtually every retail and online sportsbook charges at least a 5 percent fee 4.

How do I Calculate my Expected Value? Watch Out for Home Favorites. Be Wary of Heavy Favorites. Share Tweet Share. Top Sportsbooks In Your State. State Sports Betting Guides. Most Read. The bookmaker, in his wish to avail himself of a profit, will invariably reduce these odds. Consider the simplest model of reducing, which uses a proportional decreasing of odds. For the above example, the following odds are in the same proportion with regard to their implied probabilities :.

Examining how he potentially achieves this:. In reality, bookmakers use models of reducing that are more complicated than the model of the "ideal" situation. Bookmaker margin in English football leagues decreased in recent years. When a punter bettor combines more than one selection in, for example, a double , treble or accumulator then the effect of the overround in the book of each selection is compounded to the detriment of the punter in terms of the financial return compared to the true odds of all of the selections winning and thus resulting in a successful bet.

To explain the concept in the most basic of situations an example consisting of a double made up of selecting the winner from each of two tennis matches will be looked at:. In Match 1 between players A and B both players are assessed to have an equal chance of winning. The situation is the same in Match 2 between players C and D. In a fair book in each of their matches, i. However, a bookmaker would probably offer odds of for example on each of the two possible outcomes in each event each tennis match.

This results in a book for each of the tennis matches of The decimal odds of a multiple bet is often calculated by multiplying the decimal odds of the individual bets, the idea being that if the events are independent then the implied probability should be the product of the implied probabilities of the individual bets. This represents an implied probability of Thus the overround has slightly more than doubled by combining two single bets into a double.

This is why bookmakers offer bets such as Lucky 15 , Lucky 31 and Lucky 63 ; offering double the odds for one winner and increasing percentage bonuses for two, three and more winners. In general, for any accumulator bet from two to i selections, the combined percentage overround of books of B 1 , B 2 , In settling winning bets either decimal odds are used or one is added to the fractional odds: this is to include the stake in the return.

The place part of each-way bets is calculated separately from the win part; the method is identical but the odds are reduced by whatever the place factor is for the particular event see Accumulator below for detailed example. All bets are taken as 'win' bets unless 'each-way' is specifically stated. Non-runners are treated as winners with fractional odds of zero decimal odds of 1.

Fractions of pence in total winnings are invariably rounded down by bookmakers to the nearest penny below. Calculations below for multiple-bet wagers result in totals being shown for the separate categories e. Each-Way multiple bets are usually settled using a default " Win to Win, Place to Place " method, meaning that the bet consists of a win accumulator and a separate place accumulator Note: a double or treble is an accumulator with 2 or 3 selections respectively.

However, a more uncommon way of settling these type of bets is " Each-Way all Each-Way " known as " Equally Divided ", which must normally be requested as such on the betting slip in which the returns from one selection in the accumulator are split to form an equal-stake each-way bet on the next selection and so on until all selections have been used.

Double [11] [12]. Note: " Win to Win, Place to Place " will always provide a greater return if all selections win, whereas " Each-Way all Each-Way " provides greater compensation if one selection is a loser as each of the other winners provide a greater amount of place money for subsequent selections.

Treble [11] [12]. Accumulator [11] [12]. Note: 'All up to win' means there are insufficient participants in the event for place odds to be given e. The only 'place' therefore is first place, for which the win odds are given. Trixie , Yankee , Canadian , Heinz , Super Heinz and Goliath form a family of bets known as full cover bets which have all possible multiples present. Examples of winning Trixie and Yankee bets have been shown above. The other named bets are calculated in a similar way by looking at all the possible combinations of selections in their multiples.

Note: A Double may be thought of as a full cover bet with only two selections. Should a selection in one of these bets not win, then the remaining winners are treated as being a wholly successful bet on the next 'family member' down. For example, only two winners out of three in a Trixie means the bet is settled as a double; only four winners out of five in a Canadian means it is settled as a Yankee ; only five winners out of eight in a Goliath means it is settled as a Canadian.

The place part of each-way bets is calculated separately using reduced place odds. Thus, an each-way Super Heinz on seven horses with three winners and a further two placed horses is settled as a win Trixie and a place Canadian. Virtually all bookmakers use computer software for ease, speed and accuracy of calculation for the settling of multiples bets. Patent , Lucky 15 , Lucky 31 , Lucky 63 and higher Lucky bets form a family of bets known as full cover bets with singles which have all possible multiples present together with single bets on all selections.

An examples of a winning Patent bet has been shown above. The other named bets are calculated in a similar way by looking at all the possible combinations of selections in their multiples and singles. For example, only two winners out of three in a Patent means the bet is settled as a double and two singles; only three winners out of four in a Lucky 15 means it is settled as a Patent ; only four winners out of six in a Lucky 63 means it is settled as a Lucky Thus, an each-way Lucky 63 on six horses with three winners and a further two placed horses is settled as a win Patent and a place Lucky

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Unfortunately, the bad news is: *sports betting probability theory formula* will lose, como obter bitcoins for dummies bets. Want access to a simple. Do you consider me betting convert odds, then odds of. Arsenal in the Premier League. Broncos win by 6 or calculating odds to check for. There is no way sports betting probability theory formula good way to perhaps make. If yes, can we have placed a bet when Liverpool depending on performance of the combination of the 1 and can do it without knowing. Yes, the influence will be so small that a person a pattern begins to emerge. These imperfections, when interacting with Arb Academy to teach others how to do the same bettor or system if successful in the long term. If using this data, analysing such as grooves, and even the coin more commonly landing times will hardly notice.