Appendix B
Working with Data Frames and Arrays
B.1 Resampling and Data Partitioning
B.1.1 Using the boot function
Bootstrap is implemented in the boot function (boot package [34]), which provides functions and arguments for the book [63]. In ordinary bootstrap, the samples are selected with replacement. The basic syntax for ordinary bootstrap is
boot(data, statistic, R)
where data is the observed sample and R is the number of bootstrap replicates. The default is sim = "ordinary", the ordinary bootstrap (sampling with replacement).
The second argument (statistic) is a function, or the name of a function, which calculates the statistic to be replicated. Suppose we call this function f. The boot function generates the random indices i = (i1, ... ...
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