topic Question on the Binomial in Statistical Procedures https://communities.sas.com/t5/Statistical-Procedures/Question-on-the-Binomial/m-p/13193#M219 I was using proc freq to calculate sample size for a binomial proportion and I got numbers that disagree with what I have used in the past for 95% confidence with 95% reliability. Using a sample size of 59 I get:<BR /> <BR /> result Frequency Percent Cumulative<BR /> <BR /> Frequency Cumulative<BR /> Percent<BR /> Fail 0 0.00 0 0.00<BR /> Pass 59 100.00 59 100.00<BR /> <BR /> <BR /> Binomial Proportion for result = Pass<BR /> Proportion (P) 1.0000<BR /> ASE 0.0000<BR /> 95% Lower Conf Limit 1.0000<BR /> 95% Upper Conf Limit 1.0000<BR /> <BR /> Exact Conf Limits <BR /> 95% Lower Conf Limit 0.9394<BR /> 95% Upper Conf Limit 1.0000<BR /> <BR /> I was just curious why SAS gives me a confidence just under 94% and not 95% Tue, 14 Jun 2011 15:30:10 GMT Ayven 2011-06-14T15:30:10Z Question on the Binomial https://communities.sas.com/t5/Statistical-Procedures/Question-on-the-Binomial/m-p/13193#M219 I was using proc freq to calculate sample size for a binomial proportion and I got numbers that disagree with what I have used in the past for 95% confidence with 95% reliability. Using a sample size of 59 I get:<BR /> <BR /> result Frequency Percent Cumulative<BR /> <BR /> Frequency Cumulative<BR /> Percent<BR /> Fail 0 0.00 0 0.00<BR /> Pass 59 100.00 59 100.00<BR /> <BR /> <BR /> Binomial Proportion for result = Pass<BR /> Proportion (P) 1.0000<BR /> ASE 0.0000<BR /> 95% Lower Conf Limit 1.0000<BR /> 95% Upper Conf Limit 1.0000<BR /> <BR /> Exact Conf Limits <BR /> 95% Lower Conf Limit 0.9394<BR /> 95% Upper Conf Limit 1.0000<BR /> <BR /> I was just curious why SAS gives me a confidence just under 94% and not 95% Tue, 14 Jun 2011 15:30:10 GMT https://communities.sas.com/t5/Statistical-Procedures/Question-on-the-Binomial/m-p/13193#M219 Ayven 2011-06-14T15:30:10Z Re: Question on the Binomial https://communities.sas.com/t5/Statistical-Procedures/Question-on-the-Binomial/m-p/13194#M220 When you ask for EXACT you get what points actually in the Binomial distribution. For the sample size you have 0.9394 is as close as the distribution allows without going over. Wed, 22 Jun 2011 19:46:47 GMT https://communities.sas.com/t5/Statistical-Procedures/Question-on-the-Binomial/m-p/13194#M220 ballardw 2011-06-22T19:46:47Z