<p>Following the discussion in the comments, I have removed <a href="https://stats.stackexchange.com/questions/tagged/sample-variance" class="post-tag" title="show questions tagged &#39;sample-variance&#39;" rel="tag">sample-variance</a> from all threads. The tag will be automatically deleted within 24h.</p>

<p>I note that the wiki excerpt for our <a href="https://stats.stackexchange.com/questions/tagged/variance" class="post-tag" title="show questions tagged &#39;variance&#39;" rel="tag">variance</a> tag explicitly says that it should be used for sample variances:</p>

<blockquote>
  <p>The expected squared deviation of a random variable from its mean; or, the average squared deviation of data about their mean.</p>
</blockquote>
