How do you calculate cumulative probability?
#121
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Originally Posted by Saxo Boy
We both get the 95% thing (which btw is a non-european table) but that is the odds per individual spin. Factor in different spin 'runs' and betting 'patterns' and you can surely influence the effective of that 95% over time. You could definately make yourself less likely to win so by that logic you could make yourself more likely.
"runs"...."patterns" - there is no such thing in true mathematical probability.
Your last statement says it all - if you're more likely to beat the probability, you're equally able to be less likely to beat the probability! It all evens out over time.
If the wheel is unbiased, you CANNOT predict runs or patterns as that is just pure pure luck.
#122
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Originally Posted by imlach
If the wheel is unbiased, you CANNOT predict runs or patterns as that is just pure pure luck.
or do you want to go tell maths professors that they've got probability and chaos theory wrong?
btw, we're not trying to predict runs.. we are merely basing our system around the fact that they WILL occur.
#124
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Originally Posted by imlach
They WILL occur - unpredictably....you overall return will be 35/37'ths.
but we're not.
#126
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If the wheel is unbiased, you CANNOT predict runs or patterns as that is just pure pure luck
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If you played a straight up system of betting £5 per two thirds over 100 Million spins and never did anything other that the same bet on the same two thirds then you would at that point be (using your figure for ease) 5% down than when you started.
Lets assume you did the exact same thing but on one occassion you doubled up a loss and recoved it. At the end you are only 4.999999% down and thus have changed the odds from being fixed at 95%.
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i still see it in terms of my horse bets. if you always increase the stake sufficinetly to cover the loss on the previous bet, when you eventually win (which you will, even more definitely on a roulette wheel) you will cover your losses and come out ahead. the problem comes as SB says - what do you do when you win? if your starting stake is £5, IMO for the system to work you always have to start with £5, even if you've just won the last 3 or 4 or however many spins in a row. if you suddenly decide to start with £20, and you lose, you have just increased your potential final stake before you get a win by a massive amount. do you agree?
imlach - you can't argue against this. i understand why you are not likely to win over all, just as how you are unlikely to win overall against the bookies - the odds are not in your favour. however, by increasing the stake sufficient to cover the previous loss each time, so long as you can afford to continue until you get the win, you will win and you will come out on top. it's what happens after the win that is likely to cause the problem.
imlach - you can't argue against this. i understand why you are not likely to win over all, just as how you are unlikely to win overall against the bookies - the odds are not in your favour. however, by increasing the stake sufficient to cover the previous loss each time, so long as you can afford to continue until you get the win, you will win and you will come out on top. it's what happens after the win that is likely to cause the problem.
Last edited by ProperCharlie; 12 February 2004 at 07:02 PM.
#128
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Yeah, but isn't the fact that you don't know when to double up a loss a minor problem? you could do it one hundred times doubling your loss each time and lose
Or am I just TOTALLY missing the point here?
![Confused](images/smilies/confused.gif)
#131
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Originally Posted by eClaire
Yeah, but isn't the fact that you don't know when to double up a loss a minor problem? you could do it one hundred times doubling your loss each time and lose
Or am I just TOTALLY missing the point here?
![Confused](images/smilies/confused.gif)
yes you COULD lose 100 (or however many you can cover) times in a row and wipe yourself out... but the chances of this happening would be something stupid like 1 in 1,000,000,000,000,000,000,000. in other words, more chance that you'd be struck by lightening while trying to place your bet... in which case it doesnt matter anyway
![EEK!](images/smilies/eek.gif)
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you have to do it after every single loss - otherwise it won't work. the potential problem is encountering an unsustainable run of losses, ie meaning that you run out of money or you reach the table limit. what milo and sb have been banging on about for 7 pages, is trying to work out how likely it is that you will hit one of these series of loss making bets.
#134
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Originally Posted by imlach
But you cannot predict where the next ball is going to land.
all that matter is that it WILL land in your favour eventually... and that the odds are such that it's almost infinitely more likely that you'll be able to cover any number of losses to get that one win (which will clear ALL your losses and turn a profit).
i do agree - there should be a banging head smilie tho
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#135
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but the chances of getting an infinitely long run of losses is infinitely small, isn't it? i thought the whole point was to try and work out what the chance was of getting a run of losses that "broke your bank?
Last edited by ProperCharlie; 12 February 2004 at 07:09 PM.
#137
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Originally Posted by imlach
I understand the doubling up thing, but you can't afford to double up to infinity.
This is THE flaw in your system.
This is THE flaw in your system.
you just have to be able to cover n+1 losses.. which you will be able to cover from the win that came from n losses... and so on to infinity.
you're right in the sense that you COULD just have an infinite number of losses against you (or a VERY large number) before ANY win, but there would be more chance of britney spears coming up to you, giving u a bj and handing you all the money you ever wanted anyway. so it becomes irrelevant.
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And everytime you doubled up your losses and lost, then you'd end up doubling those losses? Yes? No?
So eventually when you do hit a winner you get it all your money back x2. But what if you run out of money and miss a few spins? Does it matter that they are consecutive?
So eventually when you do hit a winner you get it all your money back x2. But what if you run out of money and miss a few spins? Does it matter that they are consecutive?
#139
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jeez - keep calm. ![Big Grin](images/smilies/biggrin.gif)
i've had 4 whole hours away from this thread so maybe i am not up to speed. i accept that it doesn't work, because otherwise there would be no roulette wheels in casinos. i still like the idea though.
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i've had 4 whole hours away from this thread so maybe i am not up to speed. i accept that it doesn't work, because otherwise there would be no roulette wheels in casinos. i still like the idea though.
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#140
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You're blinding yourselves with visions of medium runs of wins.
There is an equal probability of medium runs of losses.
Try it, and you'll find out it just does not work. If it does, I will eat my e-hat.
There is an equal probability of medium runs of losses.
Try it, and you'll find out it just does not work. If it does, I will eat my e-hat.
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one last thing - do we agree that if it does not work, the reason why is that you will either reach the table limit or run out of money at some point, due to a succession of losses, and therefore be unable to recoup your losses?
(or maybe get bundled out of the casino by some unfriendly men in suits
)
(or maybe get bundled out of the casino by some unfriendly men in suits
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Last edited by ProperCharlie; 12 February 2004 at 07:23 PM.
#142
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I understand the doubling up thing, but you can't afford to double up to infinity.......This is THE flaw in your system.
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Uncle Rich, stop getting so up tight - as I said on page 1 I'll test this to death before putting real money towards it and even then I'll only use money I've won at poker and therefore can afford to lose
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#144
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SB - I'm not getting tight - I'm just being your reasoned argument against ![Smile](images/smilies/smile.gif)
Whether you stop at £810 or not, it makes no difference.
A sequence is a sequence is a sequence no matter where you stop/start.
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Whether you stop at £810 or not, it makes no difference.
A sequence is a sequence is a sequence no matter where you stop/start.
#145
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Originally Posted by imlach
You're blinding yourselves with visions of medium runs of wins.
There is an equal probability of medium runs of losses.
There is an equal probability of medium runs of losses.
besides.. there is NOT an equal probability of a medium run of losses. a win has a near 65% chance.. a loss is just over 35%. how are they equally as likely to come up???
![Confused](images/smilies/confused.gif)
#147
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Originally Posted by milo
besides.. there is NOT an equal probability of a medium run of losses. a win has a near 65% chance.. a loss is just over 35%. how are they equally as likely to come up???
(hint: they arent)
![Confused](images/smilies/confused.gif)
#148
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Wait.....I can hear a faint whisper in the far distance.......it's getting louder...
fuel surge fuel surge FUEL SURGE FUEL SURGE FUEL SURGE FUEL SURGE
This could be one of those classic threads.....
fuel surge fuel surge FUEL SURGE FUEL SURGE FUEL SURGE FUEL SURGE
This could be one of those classic threads.....
#149
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This has been and continues to be a great thread IMHO - lots of good debate and theory, etc ![Smile](images/smilies/smile.gif)
What milo means is that with every spin of the wheel playing 2/3rds you have a 65% chance of winning
![Smile](images/smilies/smile.gif)
What milo means is that with every spin of the wheel playing 2/3rds you have a 65% chance of winning
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#150
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Originally Posted by Saxo Boy
This has been and continues to be a great thread IMHO - lots of good debate and theory, etc ![Smile](images/smilies/smile.gif)
What milo means is that with every spin of the wheel playing 2/3rds you have a 65% chance of winning![Smile](images/smilies/smile.gif)
![Smile](images/smilies/smile.gif)
What milo means is that with every spin of the wheel playing 2/3rds you have a 65% chance of winning
![Smile](images/smilies/smile.gif)
You are taking financial winnings of the previous spins into account.....
If you're looking at it from a "spin of the wheel" point of view, you can't count previous performance.
Last edited by imlach; 12 February 2004 at 08:09 PM.