><a href="https://rdrr.io/r/stats/cor.html" class="external-link">var</a></span><span class="op">(</span><span class="va">y</span><span class="op">)</span>,L <span class="op">=</span> <span class="fl">10</span>,estimate_residual_variance <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span>
<span class="co"># <span style="color: #BB00BB;font-weight: bold;text-decoration: underline;">HINT:</span><span> For estimate_residual_variance = TRUE, please check that R is the "in-sample" LD 