11:11 UTC December 7, 2009 by Carl

Question……..would a punter be able to spot a biased wheel with the naked eye.

Answer………Almost certainly not

Question…….Would a casino member of staff spot a bias with the naked eye

Answer……..Almost certainly not

The problem with trying to spot a bias is that numbers frequently come in clusters anyway. In this instance then it is exactly the same as lottery numbers, in fact the chances of either lottery numbers or roulette numbers coming out in equal frequency are very remote. If you had 37 spins of a roulette wheel then the chances that these 37 spins would produce all 37 numbers exactly once would be astronomical.

So this means that numbers are getting repeated quite often in the short term and this is entirely normal and merely part of normal random distribution.

So it is difficult or even downright impossible for punters or staff to spot this with the naked eye as they witness normal events that appear like bias every single day when it actually isn’t.

On a 37 number roulette wheel then the bias doesn’t have to be great to totally offset the house edge. On this 37 number wheel, the odds of any one number arriving are 36-1 and the odds that are paid are 35-1.

But if a certain number (for reasons unknown) was arriving not at a rate of once every 37 spins but once in every 36 spins then any punter who recognised this would be playing equal with the house.

Take that one step further and let us say that a number was arriving once in every 35 spins…..now we are into making money territory. Imagine a player who has found a bias on number 17 and was betting $5 per spin.

He was getting 70 spins per hour on a fast game so was wagering $350/hour. But his number was being hit on average one spin in 35 so he was getting 2 winning bets per hour. At 35/1 plus the $5 bet back then this equates to $180×2 = $360.

He has had 68 losing spins at $5 which is $340 and 2 winning spins at $175 per spin so he is $10 in profit. If he can replicate that then he is making $10/hour from a biased wheel. If he doubles his bet then he makes $20/hour and so on.

He is returning $10 on every $350 wagered and is returning 2.85% on turnover. To put this into perspective, this is considerably higher than a conventional blackjack card counter. The difference is that once a wheel like this is found then a player can get away with this and perform this far easier than a card counter.

see you soon

Carl