<p>I don't think a canonical answer is possible here.</p>

<p>That's just a case when more specific &amp; descriptive titles are needed. If it's about a formula, it can be put into the title, e.g.:</p>

<blockquote>
  <p>What distribution has density proportional to $(x-1) \theta^2 (1-\theta)^{x-2}$?</p>
</blockquote>

<p>If it's about a plot, then I'd try to provide some description of the plot in the title:</p>

<blockquote>
  <p>What is this right-skewed distribution over non-negative values?</p>
  
  <p>What is this weird-looking bimodal distribution (sea-level measurements)?</p>
</blockquote>

<p>etc.</p>

<p>BTW, the last question I asked falls exactly into this category of questions:</p>

<blockquote>
  <p><a href="https://stats.stackexchange.com/questions/358940">How is the family of distributions with PDF proportional to $(1+ax^2)^{-1/a}$ called?</a></p>
</blockquote>
