">matrix</span>(<span class="fu">runif</span>(n <span class="sc">*</span> p, <span class="sc">-</span><span class="dv">5</span>, <span class="dv">5</span>), <span class="at">ncol =</span> p)</span>
<span id="cb11-22"><a href="#cb11-22" aria-hidden="true" tabindex="-1"></a><span class="fu">colnames</span>(X) <span class="ot">&lt;-</span> <span class="fu">paste0</span>(<span class="st">&quot;X&quot;</span>, <span class="dv">1</span><span class="sc">:</span>p)</span>
<span id="cb11-23"><a href="#cb11-23" aria-