ps://rdrr.io/r/stats/weighted.mean.html" class="external-link">weighted.mean</a></span><span class="op">(</span><span class="va">x</span>, <span class="va">w</span><span class="op">)</span></span></code></pre></div>
<pre><code><span><span class="co">## [1] 67</span></span></code></pre>
<div class="sourceCode" id="cb10"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="fu"><a href="https://rdrr.io/r/stats/sd.html" class="external-link">sd</a></span><span class="op">(</span><spa