Bookmakers margin in Betting

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Bookmakers margin

Bookmakers margin (advantage, vigorish) is the commission that a bookmaker charges for accepting bets on a particular event. The lower the margin, the higher the odds.

For example: the odds (O) for Team Spirit to win the Dota 2 best-of-3 match are 1.65, and for Heroic to win coefficient is 2.2. Now we will determine the margin using the formula: (1/O1 + 1/O2 – 1) × 100%. Margin = (1/1.65 + 1/2.2 – 1) × 100% = 6.05%.

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