<p>My proposal:</p>
<ol>
<li><p>Re-tag usage #1 to <a href="https://stats.stackexchange.com/questions/tagged/nested-data" class="post-tag" title="show questions tagged &#39;nested-data&#39;" rel="tag">nested-data</a>:</p>
<blockquote>
<p>Use this tag for nested random effects in mixed models and nested factors (or nested design) in ANOVA.</p>
</blockquote>
</li>
<li><p>Re-tag usage #2 to <a href="https://stats.stackexchange.com/questions/tagged/nested-models" class="post-tag" title="show questions tagged &#39;nested-models&#39;" rel="tag">nested-models</a>:</p>
<blockquote>
<p>One model is &quot;nested&quot; in another if it is a constrained version of it. Nested models can be compared with a likelihood-ratio test. Use this tag for questions about comparing non-nested models too.</p>
</blockquote>
</li>
<li><p>Remove usage #3. I don't like [nested-cross-validation] tag too much because it would be a proper subset of <a href="https://stats.stackexchange.com/questions/tagged/cross-validation" class="post-tag" title="show questions tagged &#39;cross-validation&#39;" rel="tag">cross-validation</a>; also, most existing threads about nested CV are not using [nested] tag anyway.</p>
</li>
</ol>
<hr />
<p><strong>Update (May 5):</strong> [non-nested] is gone.</p>
<p><strong>Update (May 8):</strong> I have moved all threads that are <em>not</em> about [nested-data] out of [nested]. The remaining 172 questions can now be moved into [nested-data] via mod action.</p>
<p><strong>Update (May 9):</strong> This is done, see comments. Case closed.</p>
