 <span class="fu"><a href="https://rdrr.io/r/base/Round.html" class="external-link">round</a></span><span class="op">(</span><span class="fl">3</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>       x1     x2     x3</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> x1 1.000  0.014  0.052</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> x2 0.014  1.000 -0.110</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> x3 0.052 -0.