var_Brewer_class2

Computes an approximate variance estimate according to one of
the estimators proposed by Brewer (2002).
This estimator belongs to class 2, it requires only first-order inclusion
probabilities and only for sample units.

internal

Variance approximations for the
Horvitz-Thompson total estimator in Unequal Probability Sampling
using only first-order inclusion probabilities.
See Matei and Tillé (2005) and Haziza, Mecatti and Rao (2008) for details.

Roberto Sichera

UPSvarApprox

Approximate the Variance of the Horvitz-Thompson Total Estimator

var_Brewer_class2 function

<dl><dt>y</dt>
<dd>numeric vector of sample observations</dd>
<dt>pik</dt>
<dd>numeric vector of first-order inclusion probabilities for sample units</dd></dl>

Arguments

Approximate Variance Estimators by Brewer (2002) — var_Brewer_class2

<dl>

<dt>y</dt>
<dd>numeric vector of sample observations</dd>


<dt>pik</dt>
<dd>numeric vector of first-order inclusion probabilities for sample units</dd>

</dl>

var_Brewer_class2: Approximate Variance Estimators by Brewer (2002)

Description

Usage

Value

Arguments