PDA

View Full Version : winrate confidence question


elmo
08-09-2005, 12:37 AM
im trying to figure out what my confidence level is on my winrate. i have 2.31bb/100, a 65k hand sample size, with a stdev of 15BB. so since we are talking in terms of 100s of hands, i have a sample size of 65000/100= 650 correct? i only have a vague knowledge of this, so if anyone can help me out, i would appreciate it.

thanks- alex

pzhon
08-09-2005, 12:49 AM
[ QUOTE ]
im trying to figure out what my confidence level is on my winrate. i have 2.31bb/100, a 65k hand sample size, with a stdev of 15BB. so since we are talking in terms of 100s of hands, i have a sample size of 65000/100= 650 correct?

[/ QUOTE ]
Yes, so the standard error of your win rate in BB/100 is 15/squareroot(650) = 0.59. A 95% confidence interval would be 2.31 +- 1.96*0.59 = 2.31+-1.16.

elmo
08-09-2005, 12:57 AM
thank you sir