vsb {BalancedSampling} | R Documentation |
Variance estimator of HT estimator of population total of target variable y
vsb(probs,ys,xs)
probs |
vector of length n (sample) with inclusion probabilities |
ys |
vector of target variable y of length n (sample) |
xs |
matrix of (standardized) auxiliary variables of n rows (sample) and q columns |
Number, the estimated variance
Grafström, A., and Schelin, L. (2014). How to select representative samples. Scandinavian Journal of Statistics.