print.boot
Print a Summary of a Bootstrap Object
This is a method for the function print() for objects of the
class "boot" created by a call to boot,
censboot, tilt.boot or tsboot.
- Keywords
- htest, nonparametric
Usage
# S3 method for boot
print(x, digits = getOption("digits"),
index = 1:ncol(boot.out$t), …)Arguments
- x
A bootstrap output object of class
"boot"generated by one of the bootstrap functions.- digits
The number of digits to be printed in the summary statistics.
- index
Indices indicating for which elements of the bootstrap output summary statistics are required.
- …
further arguments passed to or from other methods.
Details
For each statistic calculated in the bootstrap the original value and
the bootstrap estimates of its bias and standard error are printed.
If boot.out$t0 is missing (such as when it was created by a
call to tsboot with orig.t = FALSE) the bootstrap mean and
standard error are printed. If resampling was done using importance
resampling weights, then the bootstrap estimates are reweighted as if
uniform resampling had been done. The ratio importance sampling
estimates are used and if there were a number of distributions then
defensive mixture distributions are used. In this case an extra
column with the mean of the observed bootstrap statistics is also
printed.
Value
The bootstrap object is returned invisibly.