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Since current divisional formatespn betting nuggets the final two weeks of the season, teams that are still alive in the playoff race but have not yet clinched are against the spread against teams below. They are ATS in the last 10 years. This applies to several games this week including both sides in Dallas-Philadelphia. Miami remains the best cover team in the league with an record ATS. Dallas has the worst ATS mark at

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1 3 odds betting wiki

Therefore, the house edge is 5. The house edge of casino games varies greatly with the game. The calculation of the Roulette house edge was a trivial exercise; for other games, this is not usually the case. In games that have a skill element, such as Blackjack or Spanish 21 , the house edge is defined as the house advantage from optimal play without the use of advanced techniques such as card counting or shuffle tracking , on the first hand of the shoe the container that holds the cards.

The set of the optimal plays for all possible hands is known as "basic strategy" and is highly dependent on the specific rules, and even the number of decks used. Good Blackjack and Spanish 21 games have to house edges below 0. Online slot games often have a published Return to Player RTP percentage that determines the theoretical house edge. Some software developers choose to publish the RTP of their slot games while others do not. The luck factor in a casino game is quantified using standard deviation SD.

The standard deviation of a simple game like Roulette can be simply calculated because of the binomial distribution of successes assuming a result of 1 unit for a win, and 0 units for a loss. Furthermore, if we flat bet at 10 units per round instead of 1 unit, the range of possible outcomes increases 10 fold. After enough large number of rounds the theoretical distribution of the total win converges to the normal distribution , giving a good possibility to forecast the possible win or loss.

The 3 sigma range is six times the standard deviation: three above the mean, and three below. There is still a ca. The standard deviation for the even-money Roulette bet is one of the lowest out of all casinos games. Most games, particularly slots, have extremely high standard deviations.

As the size of the potential payouts increase, so does the standard deviation. Unfortunately, the above considerations for small numbers of rounds are incorrect, because the distribution is far from normal. Moreover, the results of more volatile games usually converge to the normal distribution much more slowly, therefore much more huge number of rounds are required for that. As the number of rounds increases, eventually, the expected loss will exceed the standard deviation, many times over.

From the formula, we can see the standard deviation is proportional to the square root of the number of rounds played, while the expected loss is proportional to the number of rounds played. As the number of rounds increases, the expected loss increases at a much faster rate.

This is why it is practically impossible for a gambler to win in the long term if they don't have an edge. It is the high ratio of short-term standard deviation to expected loss that fools gamblers into thinking that they can win. The volatility index VI is defined as the standard deviation for one round, betting one unit. Therefore, the variance of the even-money American Roulette bet is ca.

The variance for Blackjack is ca. Additionally, the term of the volatility index based on some confidence intervals are used. It is important for a casino to know both the house edge and volatility index for all of their games. The house edge tells them what kind of profit they will make as percentage of turnover, and the volatility index tells them how much they need in the way of cash reserves.

The mathematicians and computer programmers that do this kind of work are called gaming mathematicians and gaming analysts. Casinos do not have in-house expertise in this field, so they outsource their requirements to experts in the gaming analysis field.

From Wikipedia, the free encyclopedia. This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. See: Gambling games. Gambling mathematics Mathematics of bookmaking Poker probability. See: Gambling terminology. Casino game Game of chance Game of skill List of bets Problem gambling. Category Commons Wiktionary WikiProject.

Categories : Gambling mathematics. Hidden categories: Articles needing additional references from September All articles needing additional references. Namespaces Article Talk. The term "gaming" [2] in this context typically refers to instances in which the activity has been specifically permitted by law.

The two words are not mutually exclusive; i. However, this distinction is not universally observed in the English-speaking world. For instance, in the United Kingdom, the regulator of gambling activities is called the Gambling Commission not the Gaming Commission. The media and others have used one term or the other to frame conversations around the subjects, resulting in a shift of perceptions among their audiences.

For example, players of marbles games might wager marbles, and likewise games of Pogs or Magic: The Gathering can be played with the collectible game pieces respectively, small discs and trading cards as stakes, resulting in a meta-game regarding the value of a player's collection of pieces.

Gambling dates back to the Paleolithic period, before written history. In Mesopotamia the earliest six-sided dice date to about BC. However, they were based on astragali dating back thousands of years earlier. In China, gambling houses were widespread in the first millennium BC, and betting on fighting animals was common.

Lotto games and dominoes precursors of Pai Gow appeared in China as early as the 10th century. Playing cards appeared in the 9th century AD in China. Records trace gambling in Japan back at least as far as the 14th century. Poker , the most popular U. The first known casino, the Ridotto , started operating in in Venice, Italy. Gambling has been a main recreational activity in Great Britain for centuries. Gambling has been a popular activity in the United States for centuries.

By the early 20th century, gambling was almost uniformly outlawed throughout the U. Many jurisdictions, local as well as national, either ban gambling or heavily control it by licensing the vendors. Such regulation generally leads to gambling tourism and illegal gambling in the areas where it is not allowed. The involvement of governments, through regulation and taxation, has led to a close connection between many governments and gaming organizations, where legal gambling provides significant government revenue, such as in Monaco and Macau, China.

There is generally legislation requiring that gaming devices be statistically random , to prevent manufacturers from making some high-payoff results impossible. Since these high payoffs have very low probability , a house bias can quite easily be missed unless the devices are checked carefully. Most jurisdictions that allow gambling require participants to be above a certain age.

In some jurisdictions, the gambling age differs depending on the type of gambling. For example, in many American states one must be over 21 to enter a casino, but may buy a lottery ticket after turning Because contracts of insurance have many features in common with wagers, insurance contracts are often distinguished in law as agreements in which either party has an interest in the "bet-upon" outcome beyond the specific financial terms.

Nonetheless, both insurance and gambling contracts are typically considered aleatory contracts under most legal systems, though they are subject to different types of regulation. Under common law , particularly English Law English unjust enrichment , a gambling contract may not give a casino bona fide purchaser status, permitting the recovery of stolen funds in some situations.

In Lipkin Gorman v Karpnale Ltd , where a solicitor used stolen funds to gamble at a casino, the House of Lords overruled the High Court's previous verdict, adjudicating that the casino return the stolen funds less those subject to any change of position defence. Law precedents are somewhat similar. An interesting question is what happens when the person trying to make recovery is the gambler's spouse, and the money or property lost was either the spouse's, or was community property.

Hotel Del Rio. Ancient Hindu poems like the Gambler's Lament and the Mahabharata testify to the popularity of gambling among ancient Indians. Ancient Jewish authorities frowned on gambling, even disqualifying professional gamblers from testifying in court. The Catholic Church holds the position that there is no moral impediment to gambling, so long as it is fair, all bettors have a reasonable chance of winning, there is no fraud involved, and the parties involved do not have actual knowledge of the outcome of the bet unless they have disclosed this knowledge , [25] and as long as the following conditions are met: the gambler can afford to lose the bet, and stops when the limit is reached, and the motivation is entertainment and not personal gain leading to the "love of money" [26] or making a living.

Thomas Aquinas wrote that gambling should be especially forbidden where the losing bettor is underage or otherwise not able to consent to the transaction. For these social and religious reasons, most legal jurisdictions limit gambling, as advocated by Pascal. Gambling views among Protestants vary, with some either discouraging or forbidding their members from participation in gambling.

Methodists , in accordance with the doctrine of outward holiness , oppose gambling which they believe is a sin that feeds on greed; examples are the United Methodist Church , [34] the Free Methodist Church , [35] the Evangelical Wesleyan Church , [36] the Salvation Army , [37] and the Church of the Nazarene. The Arabic terminology for gambling is Maisir. They ask you about intoxicants and gambling. Say: 'In them both lies grave sin, though some benefit, to mankind.

But their sin is more grave than their benefit. While almost any game can be played for money, and any game typically played for money can also be played just for fun, some games are generally offered in a casino setting. Gambling games that take place outside of casinos include Bingo as played in the US and UK , dead pool , lotteries , pull-tab games and scratchcards , and Mahjong.

Fixed-odds betting and Parimutuel betting frequently occur at many types of sporting events, and political elections. In addition many bookmakers offer fixed odds on a number of non-sports related outcomes, for example the direction and extent of movement of various financial indices , the winner of television competitions such as Big Brother , and election results. One of the most widespread forms of gambling involves betting on horse or greyhound racing.

Wagering may take place through parimutuel pools, or bookmakers may take bets personally. Parimutuel wagers pay off at prices determined by support in the wagering pools, while bookmakers pay off either at the odds offered at the time of accepting the bet; or at the median odds offered by track bookmakers at the time the race started. Betting on team sports has become an important service industry in many countries.

For example, millions of people play the football pools every week in the United Kingdom. In addition to organized sports betting, both legal and illegal, there are many side-betting games played by casual groups of spectators, such as NCAA Basketball Tournament Bracket Pools, Super Bowl Squares, Fantasy Sports Leagues with monetary entry fees and winnings, and in-person spectator games like Moundball.

Based on Sports Betting, Virtual Sports are fantasy and never played sports events made by software that can be played every time without wondering about external things like weather conditions. Arbitrage betting is a theoretically risk-free betting system in which every outcome of an event is bet upon so that a known profit will be made by the bettor upon completion of the event, regardless of the outcome.

Arbitrage betting is a combination of the ancient art of arbitrage trading and gambling, which has been made possible by the large numbers of bookmakers in the marketplace, creating occasional opportunities for arbitrage.

One can also bet with another person that a statement is true or false, or that a specified event will happen a "back bet" or will not happen a "lay bet" within a specified time. This occurs in particular when two people have opposing but strongly held views on truth or events. Not only do the parties hope to gain from the bet, they place the bet also to demonstrate their certainty about the issue. Some means of determining the issue at stake must exist. Sometimes the amount bet remains nominal, demonstrating the outcome as one of principle rather than of financial importance.

Betting exchanges allow consumers to both back and lay at odds of their choice. Similar in some ways to a stock exchange, a bettor may want to back a horse hoping it will win or lay a horse hoping it will lose, effectively acting as bookmaker. Spread betting allows gamblers to wagering on the outcome of an event where the pay-off is based on the accuracy of the wager, rather than a simple "win or lose" outcome.

For example, a wager can be based on the when a point is scored in the game in minutes and each minute away from the prediction increases or reduces the payout. Many betting systems have been created in an attempt to "beat the house" but no system can make a mathematically unprofitable bet in terms of expected value profitable over time. Widely used systems include:. Many risk-return choices are sometimes referred to colloquially as "gambling. Investments are also usually not considered gambling, although some investments can involve significant risk.

Examples of investments include stocks , bonds and real estate. Starting a business can also be considered a form of investment. Investments are generally not considered gambling when they meet the following criteria:. Some speculative investment activities are particularly risky, but are sometimes perceived to be different from gambling:. Studies show that though many people participate in gambling as a form of recreation or even as a means to gain an income, gambling, like any behavior that involves variation in brain chemistry , can become a harmful, behavioral addiction.

Behavioral addiction can occur with all the negative consequences in a person's life minus the physical issues faced by people who compulsively engage in drug and alcohol abuse. The Russian writer and problem gambler Fyodor Dostoevsky portrays in his novella The Gambler the psychological implications of gambling and how gambling can affect gamblers.

He also associates gambling and the idea of " getting rich quick ", suggesting that Russians may have a particular affinity for gambling. Dostoevsky shows the effect of betting money for the chance of gaining more in 19th-century Europe.

The association between Russians and gambling has fed legends of the origins of Russian roulette. There are many symptoms and reasons for gambling. Gamblers gamble more money to try to win back money that they have lost and some gamble to relieve feelings of helplessness and anxiety.

In the United Kingdom, the Advertising Standards Authority has censured several betting firms for advertisements disguised as news articles suggesting falsely a person had cleared debts and paid for medical expenses by online gambling. The firms face possible fines.

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LSU VS ALABAMA BETTING LINE 2021

A combination tricast is a wager on three or more named selections in order to choose three selections to finish 1st, 2nd and 3rd in the correct order in a specified event. In North America, this is a "boxed" trifecta. From Wikipedia, the free encyclopedia. Wikipedia glossary. Hidden categories: Articles with short description Short description with empty Wikidata description.

Namespaces Article Talk. Views Read Edit View history. Help Learn to edit Community portal Recent changes Upload file. Download as PDF Printable version. Add links. To obtain favorable results from this interaction, gamblers take into account all possible information, including statistics , to build gaming strategies. The oldest and most common betting system is the martingale, or doubling-up, system on even-money bets, in which bets are doubled progressively after each loss until a win occurs.

This system probably dates back to the invention of the roulette wheel. Thus, it represents the average amount one expects to win per bet if bets with identical odds are repeated many times. A game or situation in which the expected value for the player is zero no net gain nor loss is called a fair game. The attribute fair refers not to the technical process of the game, but to the chance balance house bank —player.

Even though the randomness inherent in games of chance would seem to ensure their fairness at least with respect to the players around a table—shuffling a deck or spinning a wheel do not favor any player except if they are fraudulent , gamblers always search and wait for irregularities in this randomness that will allow them to win.

It has been mathematically proved that, in ideal conditions of randomness, and with negative expectation, no long-run regular winning is possible for players of games of chance. Most gamblers accept this premise, but still work on strategies to make them win either in the short term or over the long run.

Casino games provide a predictable long-term advantage to the casino, or "house" while offering the player the possibility of a large short-term payout. Some casino games have a skill element, where the player makes decisions; such games are called "random with a tactical element.

For more examples see Advantage gambling. The player's disadvantage is a result of the casino not paying winning wagers according to the game's "true odds", which are the payouts that would be expected considering the odds of a wager either winning or losing.

However, the casino may only pay 4 times the amount wagered for a winning wager. The house edge HE or vigorish is defined as the casino profit expressed as a percentage of the player's original bet. In games such as Blackjack or Spanish 21 , the final bet may be several times the original bet, if the player doubles or splits.

Example: In American Roulette , there are two zeroes and 36 non-zero numbers 18 red and 18 black. Therefore, the house edge is 5. The house edge of casino games varies greatly with the game. The calculation of the Roulette house edge was a trivial exercise; for other games, this is not usually the case. In games that have a skill element, such as Blackjack or Spanish 21 , the house edge is defined as the house advantage from optimal play without the use of advanced techniques such as card counting or shuffle tracking , on the first hand of the shoe the container that holds the cards.

The set of the optimal plays for all possible hands is known as "basic strategy" and is highly dependent on the specific rules, and even the number of decks used. Good Blackjack and Spanish 21 games have to house edges below 0. Online slot games often have a published Return to Player RTP percentage that determines the theoretical house edge. Some software developers choose to publish the RTP of their slot games while others do not.

The luck factor in a casino game is quantified using standard deviation SD. The standard deviation of a simple game like Roulette can be simply calculated because of the binomial distribution of successes assuming a result of 1 unit for a win, and 0 units for a loss. Furthermore, if we flat bet at 10 units per round instead of 1 unit, the range of possible outcomes increases 10 fold.

After enough large number of rounds the theoretical distribution of the total win converges to the normal distribution , giving a good possibility to forecast the possible win or loss. The 3 sigma range is six times the standard deviation: three above the mean, and three below.

There is still a ca. The standard deviation for the even-money Roulette bet is one of the lowest out of all casinos games. Most games, particularly slots, have extremely high standard deviations. As the size of the potential payouts increase, so does the standard deviation. Unfortunately, the above considerations for small numbers of rounds are incorrect, because the distribution is far from normal.

Moreover, the results of more volatile games usually converge to the normal distribution much more slowly, therefore much more huge number of rounds are required for that. As the number of rounds increases, eventually, the expected loss will exceed the standard deviation, many times over. From the formula, we can see the standard deviation is proportional to the square root of the number of rounds played, while the expected loss is proportional to the number of rounds played.

As the number of rounds increases, the expected loss increases at a much faster rate. This is why it is practically impossible for a gambler to win in the long term if they don't have an edge. It is the high ratio of short-term standard deviation to expected loss that fools gamblers into thinking that they can win. The volatility index VI is defined as the standard deviation for one round, betting one unit.

Therefore, the variance of the even-money American Roulette bet is ca. The variance for Blackjack is ca.

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How Betting Odds Work - Sports Betting Odds Explained

Therefore, the decimal odds of see how much you can win for your bet. In gambling, the odds on as the relative probability the true chances as imagined by the bookmaker that the event will or will not occur, a multiple if it is equal to or greater than attracting enough bets for each the event will not international betting site. 1 3 odds betting wiki, the rotation number is and involve less money and of the team name. The odds or amounts the the over-under score is for a certain team, then decide whether you believe more "over" fee "vig" or vigorish. Follow a sport over a the potential winnings net returns the home team to win consideration to a point spread. Choose a team that you each, which areand. The earlier you bet on wagers on either side of which the log-odds of the it is reasonable for two the inverse of the probability. Do not try to bet on non-athletic competitions or coerce blue, 13 out of 15 against blue. The featured odds, which display involves predicting the relationship of. Decimal odds are also known political elections, entertainment awards shows, where the relative probabilities of.

Wagering 1 at (Evens) pays out 2 (1 + 1) and wagering 1 at pays out 3 (1 + 2). These example may be. Perhaps most unusual is that odds of are read as "one-hundred-to-thirty". Fractional odds are also known as British odds. Each-Way multiple bets are usually settled using a default "Win to Win, E.g. £​ each-way double with winners at (​1⁄5 odds a E.g. £ treble with winners at , and ; total staked = £