[R] Inverse Student t-value

[S Ellison]

> The manual formula mean that how to calculate that value by hand for
> TINV(0.0000408831, 1221) and the resulted is 4.0891672

This is not really an R help question - you're specifically asking for something that _doesn't_ use R - but if you want to know how R does it the full C and R code for pt and qt in R (the cumulative probability distribution and the inverse, quantile, function respectively) is available in the R source code, which you can obtain from CRAN; see http://CRAN.R-project.org/mirrors.html - see the source code link from any of the listed mirrors.

S Ellison


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