| jipApprox-package | jipApprox: Approximate inclusion probabilities for survey sampling | 
| HTvar | Variance of the Horvitz-Thompson estimator | 
| jipApprox | jipApprox: Approximate inclusion probabilities for survey sampling | 
| jipDFtoM | Transform a Joint-Inclusion Probability data.frame to a matrix | 
| jipMtoDF | Transform a matrix of Joint-Inclusion Probabilities to a data.frame | 
| jip_approx | Approximate Joint-Inclusion Probabilities | 
| jip_MonteCarlo | Approximate inclusion probabilities by Monte Carlo simulation |