Wrappers for specifying PPS designs
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)
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 |
An object of class HR or ppsmat, suitable for supplying as the pps argument to svydesign.
election for examples of PPS designs
HR(0.1)
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