<p>The <a href="https://stats.stackexchange.com/questions/tagged/interval" class="post-tag" title="show questions tagged &#39;interval&#39;" rel="tag">interval</a> tag is awful. It has 94 threads and the following excerpt:</p>

<blockquote>
  <p>Statistical intervals, such as confidence, credible, prediction or tolerance intervals. </p>
</blockquote>

<p>but in fact we have separate well-established tags for <a href="https://stats.stackexchange.com/questions/tagged/confidence-interval" class="post-tag" title="show questions tagged &#39;confidence-interval&#39;" rel="tag">confidence-interval</a> (2k), <a href="https://stats.stackexchange.com/questions/tagged/credible-interval" class="post-tag" title="show questions tagged &#39;credible-interval&#39;" rel="tag">credible-interval</a> (60), <a href="https://stats.stackexchange.com/questions/tagged/prediction-interval" class="post-tag" title="show questions tagged &#39;prediction-interval&#39;" rel="tag">prediction-interval</a> (200), and <a href="https://stats.stackexchange.com/questions/tagged/tolerance-interval" class="post-tag" title="show questions tagged &#39;tolerance-interval&#39;" rel="tag">tolerance-interval</a> (30). I would say it makes sense to replace <code>[interval]</code> with more specific tags everywhere where applicable.</p>

<p>What is worse, is that <code>[interval]</code> tag is often used to refer to "interval data" -- a term that has <em>nothing</em> to do with any of the mentioned statistical intervals. See. e.g. <a href="https://stats.stackexchange.com/questions/tagged/interval+ordinal">24 questions tagged with [interval] and [ordinal]</a>. This usage is directly against the wiki excerpt. I would say that we do not need any tag for interval data because all data are interval unless stated otherwise. Alternatively, we can retag those with [interval-data]. What do you think?</p>
