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Thread: Questions About ROR

  1. #14


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    Why not use more typical bankrolls, win rates, and s.d.s for blackjack? I don't trust these formulas for RORs that are 0.17%.

    See BJA3, pp. 140-146.

    Don

  2. #15
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    You are right.

    Another with the values by default from CVCX, except a smaller bankroll.
    After 1 million hand, in my calculator, Trip RoR tends to simple RoR
    In CVCX it exceeds.

    The formulas that I used are on my page.
    http://blackjack.debourgogne.net/ror
    My BJA3 is at home but I did not invent them.


    2019-10-13 03_22_36-Microsoft Excel - Risques de Ruine.xlsx.png

    2019-10-13 03_18_02-Calculators.png2019-10-13 03_17_49-Chapter X It!.png
    Last edited by Phoebe; 10-12-2019 at 07:38 PM.

  3. #16


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    I have simulated 1 million trips(10000 rounds each trip ), same parameters(BR=70 units, ev=12.7, sd/100 hands= 29.8), ROR = 11.803%, which is very close to the results of SIMPLE ROR calculator(11.78%).

  4. #17
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    It should be close to à Trip ROR (10000). That's to say 13,504% according both calculators.

  5. #18


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    Quote Originally Posted by Phoebe View Post
    It should be close to à Trip ROR (10000). That's to say 13,504% according both calculators.

    But SIMPLE ROR calculator of this website shown ROR=11.78% ???

  6. #19
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    Yes. But it is precisey the problem.

    Logical is to use calculator with time constraint:


    2019-10-13 05_18_01-Calculators.png


    But logical too is to trust your simulation and the simple ROR calculator as 10000 near the "long run".
    If not, results are same with 1000000

    2019-10-13 05_26_00-Calculators.png

  7. #20


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    Quote Originally Posted by Phoebe View Post
    Yes. But it is precisey the problem.

    Logical is to use calculator with time constraint:


    2019-10-13 05_18_01-Calculators.png


    But logical too is to trust your simulation and the simple ROR calculator as 10000 near the "long run".
    If not, results are same with 1000000

    2019-10-13 05_26_00-Calculators.png

    I don't think it is about precisey, 11.78 compare to 13.504 . . . . there must be certain reasons behind.
    Last edited by James989; 10-13-2019 at 05:30 AM.

  8. #21
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    Astouding but Norm's calculator for simple RoR (and only for simple RoR) is wrong.
    Last edited by Phoebe; 10-13-2019 at 04:47 PM.

  9. #22


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    Quote Originally Posted by Phoebe View Post
    Astouding but Norm's calculator for simple RoR (and only for simple RoR) is wrong.
    My simulation results very close to results generated by Norm's simple ROR calculator.

    Of course, my simulation results may still wrong. Just need second opinion.

  10. #23
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    How do you do it?

  11. #24


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    Quote Originally Posted by Phoebe View Post
    How do you do it?

    Simulate 1,000,000 trips, each trip play 10,000 hands or burst out(not complete the 10000 hands), ROR = no of burst out trips/ total no of trips.

  12. #25
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    Yes, I know what you did. But how do you did it ?

  13. #26


    1 out of 2 members found this post helpful. Did you find this post helpful? Yes | No
    I have written a computer program which will dealt the card randomly, record the win/loss of each hand, update the bankroll after each round, if burst out, just stop, otherwise continue to play until reach 10k hands. Repeat for 1 million trips
    Last edited by James989; 10-14-2019 at 01:37 AM.

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