ttps://rdrr.io/r/base/names.html" class="external-link">names</a></span><span class="op">(</span><span class="va">data</span><span class="op">)</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"Area"</span>, <span class="st">"Population_density"</span>, <span class="st">"Birthrate"</span>, <span class="st">"Car_ownership"</span><span class="op">)</span></span>
<span><span class="va">out</