When I do pt(0.975, 29) I do not get 2.045 so I think you must have
declared a new function pt which is interfering with things.
On 23/02/2017 10:40, vod vos wrote:
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
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--
Michael
http://www.dewey.myzen.co.uk/home.html
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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