[R] How to search t value when you know degree of freedom?
vodvos at zoho.com
Thu Feb 23 11:40:32 CET 2017
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 <ruipbarradas at sapo.pt> wrote ----
> 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.
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