Indeed! > pt(pi, df=6) [1] 0.9899863
Simon. On 31/05/11 14:38, MacQueen, Don wrote: > I once knew someone who thought that a 1-sided upper 99% confidence limit > for the mean with n=7 was calculated by multiplying the standard error of > the mean by pi. > > -Don > > On 5/30/11 6:00 PM, "Bentley Coffey"<bentleygcof...@gmail.com> wrote: > >> Pi is an irRATIOnal number, meaning that it is not equal to the ratio of >> any >> integers ("whole numbers"). Hence, 22/7 is ONLY an approximation. The >> built-in value for pi in R is also just an approximation (pi has no >> terminal >> digit on the right of the decimal point so any finite number of digits >> will >> just be an approximation). Yet, the built-in value for pi in R is a more >> precise approximation, which is usually preferred... >> On May 30, 2011 2:02 AM, "Vincy Pyne"<vincy_p...@yahoo.ca> wrote: >>> Dear R helpers, >>> >>> I have one basic doubt about the value of pi. In school, we have learned >> that >>> pi = 22/7 (which is = 3.142857). However, if I type pi in R, I get pi = >> 3.141593. So which value of pi should be considered? >>> Regards >>> >>> Vincy >>> >>> >>> >>> >>> >>> [[alternative HTML version deleted]] >>> >>> ______________________________________________ >>> R-help@r-project.org mailing list >>> https://stat.ethz.ch/mailman/listinfo/r-help >>> PLEASE do read the posting guide >> http://www.R-project.org/posting-guide.html >>> and provide commented, minimal, self-contained, reproducible code. >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >> http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -- Simon Blomberg, BSc (Hons), PhD, MAppStat. Lecturer and Consultant Statistician School of Biological Sciences The University of Queensland St. Lucia Queensland 4072 Australia T: +61 7 3365 2506 email: S.Blomberg1_at_uq.edu.au http://www.uq.edu.au/~uqsblomb/ Policies: 1. I will NOT analyse your data for you. 2. Your deadline is your problem Statistics is the grammar of science - Karl Pearson. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.