urnsamples: Sampling from Urns

In aflaherty13/prob: Elementary Probability on Finite Sample Spaces

Description

This function creates a sample space associated with the experiment of sampling distinguishable objects from an urn.

Usage

urnsamples(x, ...)

## Default S3 method:
urnsamples(x, size, replace = FALSE, ordered = FALSE, ...)

## S3 method for class 'data.frame'
urnsamples(x, size, replace = FALSE, ordered = FALSE, ...)

Arguments

x	a vector or data frame from which sampling should take place.
size	number indicating the sample size.
replace	logical indicating whether sampling should be done with replacement.
ordered	logical indicating whether order among samples is important.
...	further arguments to be passed to or from other methods.

Details

The function operates on the indices of the urn (or rows, in the case urn is a data frame). It then takes those samples and substitutes back into urn to generate the entries of the data frame (or list, respectively). In the case that urn has repeated values, the result will be repeated values in the output.

Note that urnsamples strips x of any existing probs column before sampling.

Value

A data frame if urn is a vector, and a list if urn is a data frame.

Author(s)

G. Jay Kerns [e-mail].

See Also

iidspace, probspace nsamp

Examples

urnsamples(1:10, size = 5)
S <- cards()
urnsamples(S, size = 2)

aflaherty13/prob documentation built on May 28, 2019, 4:42 p.m.