standard deviation / confidence calculator

[danped]

Some time ago I found a link on 2+2 to a web page with a calculator on it. you put in the number of hands you have played of NL cash, the blinds, how much you have won and how many handed the tables were. The calculator then returned a standard deviation, a range of your bb/100 and a confidence % for that bb/100 (eg 95% confidence)

Can anyone pot a link to this again please as I can't find it via a search.

Thanks.

[danped]

Just to be clear, because I can now remeber it better, The inputs were no of hands, bb/100, limit and the output was a confidence % that your true bb was between X and Y.

[PBJaxx]

FYI, you would have to input your std dev too.