<p>I think no general rule can be applied here.</p>

<p>As some people already mentioned especially in statistics it is often hard to google since you do not know the exact term to search for yet.</p>

<p>For some users the question will seem stupid, while for other it is not.</p>

<blockquote>
  <p>"easily answered by Wikipedia or Google"</p>
</blockquote>

<p>This is is highly user specific. </p>
