I've been wondering what's a good ev bb/100 in calling 3b spots.
Since we open 3bb and get 3betted and fold, we'll reach -300bb/100
My current overral bb/100 in these spots are -204,86bb/100 in 364 total hands.
What is the sample size we need to verify this with clarity?

Another problem is that since I don't open 3bb/100 (except utg) I don't believe I'm doind well.

EP 3bb open = 42 hands-> ev -244,76bb/100
MP 2,8bb open = 85 hands -> ev -20,82bb/100
CO 2,8bb open = 96 hands -> ev -126,25bb/100
BU 2,6bb open = 117 hands -> ev -440,26bb/100
SB 2,8bb open = 24 hands -> ev +46,25bb/100

I believe this is a really smal sample sizing to analyze?