Sample size requirement to estimate sustainable BB/100 & 80k hand stat

[DrVanNostrin]

There are many threads (in other forums at least) that deal with sample size, confidence intervals, etc.

10k hands --> ~ +/- 3BB/100. The size of the interval is proportional to the square root of sample size. 80k hands --> +/- ~ 1BB/100. For a better estimate you'll need your standard deviation. In poker tracker, under the sessions tab, click more detail, and post your SD/100 (it should be between 16BB and 19BB).