s="n">columns</span><span class="o">=</span><span class="p">[</span><span class="s1">&#39;Freq&#39;</span><span class="p">,</span> <span class="s1">&#39;Density&#39;</span><span class="p">])</span>
  <span class="n">fig</span> <span class="o">=</span> <span class="n">df</span><span class="o">.</span><span class="n">iplot</span><span class="p">(</span><span class="n">columns</span><span class="o">=</span><span class="p">[</span><span class="s1">&#39;Freq&#39;</span><span class="p">,</span> <span class="s1">&