Draws a simple random sample with replacement.
Arguments
- N
Population size (positive integer).
- n
Sample size (non-negative integer).
- method
The sampling method. Currently only
"srs".- nrep
Number of replicate samples (default 1).
- prn
Optional vector of permanent random numbers for sample coordination. No equal-probability WR method currently supports
prn; supplying it is an error.- ...
Reserved for extensions. Built-in methods currently take no additional arguments.
Value
An object of class c("equal_prob", "wr", "sondage_sample").
When nrep = 1, $sample is an integer vector and $hits is an
integer vector. When nrep > 1, $sample is a matrix (n x nrep)
and $hits is a matrix (N x nrep).
See also
equal_prob_wor() for without-replacement designs,
unequal_prob_wr() for unequal probability designs.
Examples
set.seed(1)
s <- equal_prob_wr(10, 3)
s$sample
#> [1] 9 4 7
s$hits
#> [1] 0 0 0 1 0 0 1 0 1 0