007091 -0.7269096</span>
<span class="co">#&gt; 40 -0.59555521 -4.775511  3.764182  2.90738062  1.3004964</span>
<span class="fu"><a href="https://rdrr.io/r/base/cat.html" class="external-link">cat</a></span><span class="op">(</span><span class="st">"Variance of row sums for ex_3 is "</span>, <span class="fu"><a href="https://rdrr.io/r/stats/cor.html" class="external-link">var</a></span><span class="op">(</span><span class="va">ex_3</span><span class="op">$</span><span class="va">ROWSUM</span><span class="o