Hajekestimator {sampling} | R Documentation |
The Hajek estimator
Description
Computes the Hájek estimator of the population total or population mean.
Usage
Hajekestimator(y,pik,N=NULL,type=c("total","mean"))
Arguments
y |
vector of the variable of interest; its length is equal to n, the sample size. |
pik |
vector of the first-order inclusion probabilities; its length is equal to n, the sample size. |
N |
population size; N is only used for the total estimator; for the mean estimator its value is NULL. |
type |
the estimator type: total or mean. |
See Also
Examples
# Belgian municipalities data
data(belgianmunicipalities)
# Computes the inclusion probabilities
pik=inclusionprobabilities(belgianmunicipalities$Tot04,200)
N=length(pik)
n=sum(pik)
# Defines the variable of interest
y=belgianmunicipalities$TaxableIncome
# Draws a Poisson sample of expected size 200
s=UPpoisson(pik)
# Computes the Hajek estimator of the population mean
Hajekestimator(y[s==1],pik[s==1],type="mean")
# Computes the Hajek estimator of the population total
Hajekestimator(y[s==1],pik[s==1],N=N,type="total")
[Package sampling version 2.10 Index]