for Standard Deviation, An upper limit of 25 i thik would be high enough. 20 is healthy, 15 is probably pushing too good, since that means you are starting to pass on marginal situations that are long term +EV. Ideally if you could have a WR of like 4/100 with a SD of 0, that would be great. But that would mean it's not poker, its a desk job. (Side note, if anybody gets ambitious, wonder how pro poker players SD compares to, say, Commission based sales, like yacht sales or real estate.)

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