RVAideMemoire (version 0.9-45-2)

bootstrap: Bootstrap

Description

Simplified version of the boot function.

Usage

bootstrap(x, fun, nrep = 1000, conf.level = 0.95, ...)

Arguments

x

numeric vector.

fun

function to be used for computation (function(x,i) ...(x[i])).

nrep

number of replicates.

conf.level

confidence level for confidence interval.

...

additional arguments to boot. See help of this function.

Value

• method
  the character string "Bootstrap"
• data.name
  a character string giving the name of the data.
• estimate
  the estimated original value
• conf.level
  confidence level for confidence interval.
• rep
  number of replicates.
• conf.int
  limits of the confidence interval.

Details

See help of the boot function for more explanations.

See Also

boot

Examples

# Confidence interval of a mean
samp <- sample(1:50,10,replace=TRUE)
bootstrap(samp,function(x,i) mean(x[i]))

# Confidence interval of the standard error of the mean
bootstrap(samp,function(x,i) sd(x[i])/sqrt(length(x[i])))