base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"comuna"</span>, <span class="st">"sexo"</span><span class="op">)</span>, <span class="st">"expc"</span><span class="op">)</span></span>
<span class="r-in"><span class="va">cd</span><span class="op">$</span><span class="va">disenio</span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Stratified 1 - level Cluster Sampling design (with replacement)</span>
<span class="r-out co"><span class="r-pr">#&gt;</sp