If we want to get 95% limit of t value, the result will be pt(0.975, 29) = 2.045
is that right? ---- On 星期三, 22 二月 2017 08:04:36 -0800 Rui Barradas <ruipbarra...@sapo.pt> wrote ---- > Hello, > > It would be ?pt not pnorm. > And as you can see in that help page you need another value, the value > of the quantile. (Don't worry about the arguments ncp or log just q and df) > > Hope this helps, > > Rui Barradas > > Em 22-02-2017 15:53, vod vos escreveu: > > > > Hi everyone, > > > > How to search t value when you know degree of freedom? > > > > For example, the degree of freedom is 29, how to use R to calculate the t > > value for it? > > > > t.test does not help, or pnorm? I am not sure. > > > > Thanks. > > > > ______________________________________________ > > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > 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 -- To UNSUBSCRIBE and more, see 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.
