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Thread: TBA% and IBA%.

  1. #1


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    TBA% and IBA%.

    Hey guys!

    Two questions:

    1) I understand the %W/L reported in CVCX is the IBA% of CVData. Is there a way to estimate TBA% from CVCX alone?

    2) What do you consider the actual advantage of your systems? I have always used TBA%, which seems much more "real", but since only IBA% is reported in CVCX I started to wonder.

    Thanks in advance!

    Best!
    Life's true face is the skull.” - Nikos Kazantzakis

  2. #2
    Random number herder Norm's Avatar
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    IBA is what's quoted for EV in just about every book. All risk calculations must be based on IBA as all further bets follow from the initial bet.
    "I don't think outside the box; I think of what I can do with the box." - Henri Matisse

  3. #3


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    Quote Originally Posted by Norm View Post
    IBA is what's quoted for EV in just about every book. All risk calculations must be based on IBA as all further bets follow from the initial bet.
    Thanks Norm.

    Well, I guess my first question is even more important now, since I just finished a LONG analysis of simulations now and only took note of TBA%.

    No magic formula to approximate one from the other, huh?
    Life's true face is the skull.” - Nikos Kazantzakis

  4. #4
    Random number herder Norm's Avatar
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    Depends on rules. IBA is around 11% to 18% higher. If you have CVCX, then you also have a demo of CVData on the PC. You can run a CVData sim with your rules. The results are randomized and generally meaningless. BUT, the randomization is such that the ratio between the IBA and TBA will be very close to correct for the given rules.
    "I don't think outside the box; I think of what I can do with the box." - Henri Matisse

  5. #5


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    Quote Originally Posted by Norm View Post
    Depends on rules. IBA is around 11% to 18% higher.
    Thanks Norm! This at least gives me a confidence interval.

    Quote Originally Posted by Norm View Post
    If you have CVCX, then you also have a demo of CVData on the PC. You can run a CVData sim with your rules. The results are randomized and generally meaningless. BUT, the randomization is such that the ratio between the IBA and TBA will be very close to correct for the given rules.
    I also have CVData and used them for the simulations. The problem is that I did not create a simulation name for each one I did, I just changed some parameters and re-run them with the same name and took note only of SCORE and TBA%. Therefore, I have to do everything again to get IBA%.

    I would rather just use the percentages you gave me I guess

    Thanks a lot!
    Life's true face is the skull.” - Nikos Kazantzakis

  6. #6


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    Standard conversion is 1.13%.

    Don

  7. #7


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    Quote Originally Posted by DSchles View Post
    Standard conversion is 1.13%.

    Don
    There is a standard conversion?! Fantastic!

    Thanks Don!

    But I will be sure to note down IBA% next time....

    Best!
    Life's true face is the skull.” - Nikos Kazantzakis

  8. #8
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    Quote Originally Posted by DSchles View Post
    Standard conversion is 1.13%.
    Don
    Do you really meant 1.13% ?
    Or IBA=TBA*1.13 ?

  9. #9


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    Quote Originally Posted by Skull View Post
    Thanks Norm.

    Well, I guess my first question is even more important now, since I just finished a LONG analysis of simulations now and only took note of TBA%.

    No magic formula to approximate one from the other, huh?
    For traditional shoe games, IBA is 1.13 times TBA.

    Don

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