mulit tabling vs 1 table

[dana33]

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Variance is a function of number of hands, not of time.

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Variance and EV can be calculated as a function of either number of hands or time. Variance per hour is more relevant to the OPs question in that the expectation per hour is the same in the two cases (assuming equal win rates in BB/100 at the two levels), while the variance per hour is reduced by half when 4-tabling at the lower stakes.

[dana33]

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...while the variance per hour is reduced by half when 4-tabling at the lower stakes.

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Correction: it's the standard deviation, not the variance, that is reduced by half.