ps://rdrr.io/r/base/data.frame.html'>data.frame</a></span><span class='op'>(</span>chats <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='fl'>2000</span>, <span class='fl'>3000</span>, <span class='fl'>4000</span>, <span class='fl'>3000</span><span class='op'>)</span>, ses <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='fl'>100</span>, <span