Moderator’s note; There were two messages from this person in the moderation
queue and since they appeared identical in the moderation panel, I accepted
accepted one and rejected the other. I’m now wondering (and have no way of
checking) whether the OP sent a second non-HTML version and I rejected the
wrong one, so I’m posting a version with the code parsed as I imagine it should
have appeared:
> On Jan 17, 2015, at 12:27 PM, varin sacha <varinsa...@yahoo.fr> wrote:
>
> Hi dear R-experts,
> I want to compare the bootstrap percentile interval, the Z interval, the T
> interval, etc.So I use a function (I have modified a few things) I have found
> on stats.stackexchange.
simfun <- function(n=20) {x <- rnorm(n)
m.x <- mean(x)
s.x <- sd(x)
z <- m.x/(1/sqrt(n))
t <- m.x/(s.x/sqrt(n))
b <- replicate(1000, mean(sample(x, replace=TRUE)))
c( t=abs(t) > qt(0.975,n-1),
z=abs(z) > qnorm(0.975),
z2 = abs(t) > qnorm(0.975),
b= (0 < quantile(b, 0.025)) | (0 > quantile(b, 0.975)))
}
out <- replicate(1000, simfun())
rowMeans(out)
t z z2 b.2.5% 0.045 0.052 0.061 0.070
> I still have the bootstrap percentile interval. Now, starting from this
> function here above, I would like to calculate all the other intervals
> (t-studentized, BCa, etc.) using the boot package and the boot.ci function
> (type="all"). How can I do ?
> Thanks for your help.
> Best,
> SV
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> 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.
David Winsemius, MD
Alameda, CA, USA
______________________________________________
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.
