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Thread: What is the probability that EV in blackjack is on or below four standard deviations?

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    What is the probability that EV in blackjack is on or below four standard deviations?

    It is possible that the EV in Blackjack go on or below 4 standard deviations?

  2. #2
    Senior Member Emeritus Sonny's Avatar
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    Roughly 0.00003167

    -Sonny-

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    You need to understand the basic statistical concept of Standard Deviation.

    The "probability of any event being below 4 (or X) standard deviations is the same for BJ as it is for anything else.

    I suggest that you learn what Z-Scores are.

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    Senior Member Anton Chigurh's Avatar
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    EV is expected value, given a fixed set of conditions.

    Your actual results will be above or below EV, by perhaps as much as a few standard deviations, although more that 3 standard deviations away from EV is highly unlikely.

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