stratsrs {pps}R Documentation

Stratified simple random sampling

Description

In each stratum, select a simple random sample

Usage

stratsrs(stratum,nh)

Arguments

stratum A vector of stratum codes, sorted by stratum
nh A vector containing the sample size in each stratum

Value

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

Note

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

Examples

strat <- c(1,1,1,1,1,2,2,2,3,3,3,3,3,3,3)  # stratum 1 has 5 units, etc. 
nh <- c(2,1,3)  # select 2 units from stratum 1, 1 from stratum 2 and 3 from 3
stratsrs(strat,nh)

[Package pps version 0.94 Index]