I am a new R user, and am having trouble using the boot package. All I want to do is use bootstrapping to produce confidence intervals around a mean for a vector of numbers, such as:
x <- rnorm(100, 1, .5)
Any tips?
Doesn't the following suffice?
library(boot)
x <- rnorm(100, 1, .5)
b <- boot(x, function(u,i) mean(u[i]), R = 999)
boot.ci(b, type = c("norm", "basic", "perc"))
来源：https://stackoverflow.com/questions/9304582/bootstrap-confidence-intervals-in-r