HR {survey} | R Documentation |
The Horvitz-Thompson estimator and the Hartley-Rao approximation require information in addition to the sampling probabilities for sampled individuals. These functions allow this information to be supplied.
HR(psum=NULL, strata = NULL) ppsmat(jointprob, tolerance = 1e-04) ppscov(probcov, weighted=FALSE)
psum |
The sum of squared sampling probabilities for the population, divided by the sample size, as a single number or as a vector for stratified sampling |
strata |
Stratum labels, of the same length as |
jointprob |
Matrix of pairwise sampling probabilities for the sampled individuals |
tolerance |
Tolerance for deciding that the covariance of sampling indicators is zero |
probcov |
Covariance of the sampling indicators (often written 'Delta'), or weighted covariance if |
weighted |
If |
An object of class HR
,ppsmat
, ppsdelta
, or ppsdcheck
suitable for supplying as the pps
argument to svydesign
.
election for examples of PPS designs
HR(0.1)