View source: R/varEst_class2.R
var_Rosen | R Documentation |
Compute an approximate variance estimate using the estimator proposed by Rosén (1991). Estimator of class 2, it requires only first-order inclusion probabilities and only for sample units.
var_Rosen(y, pik)
y |
numeric vector of sample observations |
pik |
numeric vector of first-order inclusion probabilities for sample units |
a scalar, the estimated variance
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