ppss {pps}

PPS systematic sampling

Description

Use PPS systematic sampling to select a sample of n units out of N

Usage

ppss(sizes,n)

Arguments

sizes

A vector of the sizes of the units in the population

n

The sample size

Value

Returns the indices of the units that were selected in the sample

Note

See the user's guide, pps-ug.pdf, for more information.

Examples

sizes <- c(9,2,5,17,4,21,15,7,4,11,23,23,14)
sampleindices <- ppss(sizes,4)