I went through my PT stats and I found something called Standard deviation (under session notes - more details). I think I had something about this in highschool, but I cant remember what it was about.

What does Standard deviation mean? What is it? And what would be a "good number" of BB/100 hands to have in PT?

Standard deviation is a measure of variance and without getting too technical it basically measures your swings. You add and subtract your SD to get a "range." Let's say your BB/100 is 1 and your standard deviation is 2. Are you a winning player? It's hard to say. Because the swings are 1-2= -1 and 1+2=3. Within 1 standard deviation you are in the range of -1 BB/100 and 3 BB/100.

Statistically speaking, 68% of all results are within 1 standard deviation and 95% of all results are within 2 SDs. So lets say your BB/100 was 5 and the SD was 2. Then you could say with 95% certainty that you are a profitable player as a 2SD range is from 1 to 9 BB/100.

I'm not sure what a good one is for a player. I'd love to hear what the forum has for their numbers.

Tim