[R] Where is the stud.ci() function used in boot.ci()?

Gabor Grothendieck ggrothendieck at gmail.com
Sat Jan 7 22:17:28 CET 2006


On 1/7/06, Christopher R. Bilder <cbilder at earthlink.net> wrote:
> Hello!
> I am trying to duplicate the studentized bootstrap confidence interval
> calculations in boot.ci() without using boot.ci().  My w/o boot.ci()
> calculations are close to boot.ci() using the same object from
> implementation of boot(), but not quite the same (I think the differences
> are due to how quantiles are computed for z*).  Through examining the
> boot.ci() code, I can see there is a call out to a function called
> stud.ci().  Obviously, examining this function would be very helpful to see
> how the calculations are truly done!  So, I am trying to find the actual
> function code for the stud.ci() function.  Sorry if this is a simple
> question, but does anyone know how this function code can be seen?
> Unfortunately, this function can not be seen in R through simply typing its
> name at the command prompt and there is no help entry for it.  Also, there
> is no obvious file name in boot_1.2-24.zip at
> http://cran.r-project.org/src/contrib/Descriptions/boot.html for the
> specific function.
> Thank you in advance!
> Chris Bilder
> University of Nebraska-Lincoln
> Department of Statistics
> Lincoln, NE 68583
> E-mail: cbilder3 at unl.edu or chris at chrisbilder.com
> Website: www.chrisbilder.com
>        [[alternative HTML version deleted]]
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