 class="external-link">head</a></span><span class="op">(</span><span class="va">Z</span>, <span class="fl">5</span><span class="op">)</span></span></code></pre></div>
<pre><code><span><span class="co">##         height   weight     age     male</span></span>
<span><span class="co">## Alfred  0.2868  0.07545 -0.3687  0.12456</span></span>
<span><span class="co">## Alice   0.2348 -0.08067  0.3569 -0.02177</span></span>
<span><span class="co">## Barbara 0.2714 -0.07715 -0.3862 -0.45170</span></span>
<span><spa