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I should know how to do this . . .
Assume my PFR is R. How likely is it that in a stretch of N hands, I will actually raise a fraction of hands r?
The question is really about confidence in PFRs after a small number of hands. For example, if my actual PFR is 10%, how likely is it that in any given stretch of 140 hands, my observed PFR is only 3%? The question came up in regards to not 3-betting AKo from an UTG pre-flop raiser with a PFR of 3%, but only 144 hands. I advised that 144 hands was nowhere near enough of a raise to simply cold-call (thus letting in 5 players behind Hero when he has an unpaired offsuit hand that only makes 1 straight), and that a raise was in order. I'd like to back it up mathematically but I seem to be coming up stupid tonight. Like I said, I should know how to do this, but I'm really sort of at a loss. Edit: In case it was unclear, R != r. |
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