ybot
ybot
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August 18th, 2015 at 3:33:13 PM permalink
Suppose you have got 10,000 roulette trials, divided in 20 sets of 500 .
You scan day by day and find a way to play that gives 6% edge in average
This play has won each of the 20 500-trial days from 1 to 10% of the total money wagged
The trick is that we found it out after taking the whole data.
This way of play is flatbetting on 15 numbers, but, each of them have got different chip value
Math question:
1)what is the chance of a way to play that is suposed to lose 2.7% of the tottal wagged have got +6% edge in 10k?
2)What is the chance to get +1 to 10% edge in the next 500 set?
3)How much positive fluctuation is here? 1 to 2 standard deviations?
4)What if we succeeded in the next 10 sets of 500 trials with similar performance?

warm regards
ybot
EvenBob
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August 18th, 2015 at 4:12:25 PM permalink
Quote: ybot


This way of play is flatbetting on 15 numbers, but, each of them have got different chip value




The chip value is irrelevant. You won't
win playing this, you will eventually
hit a losing streak that will wipe out
all your wins. 10K trials is nothing, run
a sim for 100K spins and you'll find the
real results.
"It's not called gambling if the math is on your side."
TomG
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August 18th, 2015 at 4:31:08 PM permalink
Quote: ybot

1)what is the chance of a way to play that is suposed to lose 2.7% of the tottal wagged have got +6% edge in 10k?
2)What is the chance to get +1 to 10% edge in the next 500 set?
3)How much positive fluctuation is here? 1 to 2 standard deviations?
4)What if we succeeded in the next 10 sets of 500 trials with similar performance?



1) it's definitely under 1%, starting to get close to zero
2) if everything is exactly the same as the first 10 000 spins, should be at least 50% (though that would even include the chance of doing better than +10%)
3) more than two standard deviations
4) YOU BE RICH
ybot
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August 18th, 2015 at 5:58:26 PM permalink
Evenbob, I am an AP, we know basic and a little more complex probability conceps
The way to calculate this event is beyond my resources.

What I meant when I stated that numbers had different chip value is that even being a flatbet bet, I asigned a chip value to each of the 15 numbers and kept the same bet for the whole 10k.

In this math questions I want to know the probability of facts I witness, we, then, might discuss wether I win or lose

10k playing the same way isn`t too much, but it has its weight, same numbers winning the entire number string.

Fluctuations are brave enemies, to know how brave they could be, we should find out a true/final edge in case it exists.
andysif
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August 18th, 2015 at 6:07:12 PM permalink
Quote: ybot

Evenbob, I am an AP, we know basic and a little more complex probability conceps
The way to calculate this event is beyond my resources.

What I meant when I stated that numbers had different chip value is that even being a flatbet bet, I asigned a chip value to each of the 15 numbers and kept the same bet for the whole 10k.

In this math questions I want to know the probability of facts I witness, we, then, might discuss wether I win or lose

10k playing the same way isn`t too much, but it has its weight, same numbers winning the entire number string.

Fluctuations are brave enemies, to know how brave they could be, we should find out a true/final edge in case it exists.


so you are an AP huh.
interesting.

what area do you AP in?


now back to your problem. i think what your problem is you got 10k of data AND THEN you find a pattern. What you should do is invent a system first and then do a 10k trial.

Maybe that will help.
ybot
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August 18th, 2015 at 6:12:58 PM permalink
TomG,

1)very dificult for random numbers to perform +6% edge , never losing a 500 run, Negative expectation starts to fade. Might we especalute in a positive expectation below 6%?

2)Did you mean that there is 50% chance to this way of play to get from 1 to 15% edge in the next 500 spins?
How did the fact that this play performed well affect a 50% success prediction?
What is the chance for any other 15 numbers to get from 1 to 15% edge in the next test?

3)in case we face over 2 sd at 10k, we might predict a result closer than predicting from random priors

4)I could be rich, yes
Does it change anything wether there were 20 sets of 500 than 30 sets of 500?
EvenBob
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August 18th, 2015 at 6:19:55 PM permalink
Quote: ybot


What I meant when I stated that numbers had different chip value is that even being a flatbet bet, I asigned a chip value to each of the 15 numbers and kept the same bet for the whole 10k.
.



What makes you think the 15 numbers you
chose will win more often that the rest of
the numbers in every session.
"It's not called gambling if the math is on your side."
ybot
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August 18th, 2015 at 6:20:24 PM permalink
Quote: andysif

so you are an AP huh.
interesting.

what area do you AP in?


now back to your problem. i think what your problem is you got 10k of data AND THEN you find a pattern. What you should do is invent a system first and then do a 10k trial.

Maybe that will help.



Hi andysif, we know this way to analize data can curvefit info.

As data is perecible, we must work with the updated and fresh

To get 10k takes a time, let alone another 10k, in the elapsed time many conditions may vary

In case we invented a system first, we needed up to 2sd to confirm a positive expectation, then, we must study a lot to determine the accurate advantage.
ybot
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August 18th, 2015 at 6:25:46 PM permalink
Quote: EvenBob

What makes you think the 15 numbers you
chose will win more often that the rest of
the numbers in every session.



I scanned data after being taken , found a way to succeed in the whole 20 day of 500 spins

I think nothing, I obey to probability, the only way to know what to do or not


I try to be the most objective and study it with probability tools, I lack of strong knowledge about as an engeneer or an expert in probability has got.
EvenBob
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August 18th, 2015 at 8:34:57 PM permalink
Quote: ybot

I scanned data after being taken ,



What does this even mean?
"It's not called gambling if the math is on your side."
andysif
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August 18th, 2015 at 10:10:30 PM permalink
Quote: EvenBob

What does this even mean?


he recorded the data, THEN he looked for pattern
EvenBob
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August 18th, 2015 at 10:18:29 PM permalink
Quote: andysif

he recorded the data, THEN he looked for pattern



Why? What good is it after the fact.
"It's not called gambling if the math is on your side."
Zcore13
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August 18th, 2015 at 10:23:45 PM permalink
Quote: EvenBob

Why? What good is it after the fact.



What if the wheel is not balanced correctly?


ZCore13
I am an employee of a Casino. Former Table Games Director,, current Pit Supervisor. All the personal opinions I post are my own and do not represent the opinions of the Casino or Tribe that I work for.
RS
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August 18th, 2015 at 10:38:16 PM permalink
Figure out an algorithm that will suit your "number picking" scheme and wagers on each of those numbers.

Get another sample of 10K spins. Using those spins, see how your number picking / wagering scheme works out.


Here's a quick way to get started: The first 10K spins of data you have, figure out the frequency of each number hit. If the frequencies are very close to their expected hit rate, you're probably just going down some rabbit hole and you're not going to get any good data. But IF the frequencies of number hits differs a good amount from expectation, then you're looking at a biased wheel.


Good luck, but I wouldn't waste much time or spend much (or any) money on this endeavor unless you truly believe there is an advantage to be had. But I suspect there is none.
EvenBob
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August 18th, 2015 at 11:13:05 PM permalink
Quote: Zcore13

What if the wheel is not balanced correctly?


ZCore13




You know how long it takes to record
10K spins on one wheel? Months and
months.
"It's not called gambling if the math is on your side."
ybot
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August 19th, 2015 at 2:49:51 AM permalink
Quote: EvenBob

Why? What good is it after the fact.



It takes months to store 10k trials, we must work with it first
ybot
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August 19th, 2015 at 2:55:06 AM permalink
Quote: RS

Figure out an algorithm that will suit your "number picking" scheme and wagers on each of those numbers.

Get another sample of 10K spins. Using those spins, see how your number picking / wagering scheme works out.


Here's a quick way to get started: The first 10K spins of data you have, figure out the frequency of each number hit. If the frequencies are very close to their expected hit rate, you're probably just going down some rabbit hole and you're not going to get any good data. But IF the frequencies of number hits differs a good amount from expectation, then you're looking at a biased wheel.


Good luck, but I wouldn't waste much time or spend much (or any) money on this endeavor unless you truly believe there is an advantage to be had. But I suspect there is none.



Rs, number frequencies differ , none of the 15 numbers have got the same hit ratio
TomG
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August 19th, 2015 at 7:30:21 AM permalink
Quote: ybot

1)very dificult for random numbers to perform +6% edge , never losing a 500 run, Negative expectation starts to fade. Might we especalute in a positive expectation below 6%?


Divide profit by total amount risked to get your expected edge. After 10,000 spins there shouldn't be much of a reason to adjust that number


Quote: ybot

2)Did you mean that there is 50% chance to this way of play to get from 1 to 15% edge in the next 500 spins?


Yes. Could even be well over 50% depending on exactly how you are getting your edge


Quote: ybot

How did the fact that this play performed well affect a 50% success prediction?


It was by far the most important factor


Quote: ybot

What is the chance for any other 15 numbers to get from 1 to 15% edge in the next test?


With a 6% player edge, very high. With a 2.7% house edge very low
ybot
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August 19th, 2015 at 8:01:33 AM permalink
Remember we picked this system after collecting data, if we take raw edge as true edge we surely get fooled by 1 to 2 standard deviation fluctuation. No way that the same +6% is the true edge

How do you calculate 50% chance to get from 1 to 10% edge in the next 500 trials?
TomG
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August 19th, 2015 at 12:44:13 PM permalink
Quote: ybot

No way that the same +6% is the true edge



Then just bet half what Kelly Criterion would otherwise say.

Or do a better estimating your edge
ThatDonGuy
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August 19th, 2015 at 2:15:32 PM permalink
Quote: EvenBob

What does this even mean?


He "shot the arrows and then drew the target" - in other words, he got the numbers first, then looked for patterns in that particular set of numbers.

Any system can "work" if you create it after the fact.
RS
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August 19th, 2015 at 2:32:09 PM permalink
Quote: ybot

Rs, number frequencies differ , none of the 15 numbers have got the same hit ratio



How much do they differ from expectation? Find the one with the highest hit frequency -- if you were to flat bet that number, over that 10k trial, would you have come out ahead?
ybot
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August 19th, 2015 at 2:33:48 PM permalink
Quote: ThatDonGuy

He "shot the arrows and then drew the target" - in other words, he got the numbers first, then looked for patterns in that particular set of numbers.

Any system can "work" if you create it after the fact.



Yes, this is what I actually did

But, there must a thereshold

We know +6% edge is unreal, any edge probably, o none

In this math section I try to debank the way to calculate it
RS
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August 19th, 2015 at 2:34:39 PM permalink
Quote: ybot

Rs, number frequencies differ , none of the 15 numbers have got the same hit ratio



How much do they differ from expectation? Find the one with the highest hit frequency -- if you were to flat bet that number, over that 10k trial, would you have come out ahead?
ybot
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August 19th, 2015 at 3:02:02 PM permalink
Quote: RS

How much do they differ from expectation? Find the one with the highest hit frequency -- if you were to flat bet that number, over that 10k trial, would you have come out ahead?



At 10k, analizing single numbers, you need at least 3sd to consider that its updated edge would lower to a more realistic frequency. Random fluctuations use to fool you, even to pro players. Single number study takes over 20k

Yes, there are few numbers with 2 to 3 sd

For players who have never played with an edge on roulette you must know that +6% on 1 number is not the same as +6% on 2 numbers or 15, each scenario yield different profits
ybot
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August 21st, 2015 at 9:29:55 AM permalink
This "system" takes to substract from 1 to 2 standard deviations from this positive fluctuation
ybot
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August 27th, 2015 at 5:40:43 PM permalink
Anyone might calculate probability of future events having past results?
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