SunterSampling (version 1.0.1)

SunterSampling-package: Sunter sampling

Description

The package provides functions for drawing samples according to Sunter's sampling design, which is an approximate probability proportional to size design, and for computing its first and second order inclusion probabilities

Details

Package:

SunterSampling

Type:

Package

Version:

1.0

Date:

2012-05-02

License:

GPL

LazyLoad:

yes

References

C-E. Sarndal, B. Swensson, J. Wretman: Model Assisted Survey Sampling, Springer, New York, 1992 (pp.93-96)

See Also

sunter, sunterpi, sunterpi2

Examples

# from Sarndal et al. (1992)
x<-c(40,25,20,10,5)
n<-2
pi<-sunterpi(x,n) # first order inclusion probabilities
pi2<-sunterpi2(x,n) # second order inclusion probabilities
apply(pi2,2,sum) # they should be equal to...
n*pi # OK!
sunter(x,n) # sample drawn according to Sunter's design