<p>This is a fair reminder and an interesting occasion to discuss how to
handle such question. When the question has to do with statistical
analysis or related techniques (including visualization when the purpose
is to answer a statistical question)--as per our FAQ--it belongs here.
Low quality questions are either closed or subjected to a request for
clarification. This is an important aspect of Stack Exchange of giving
the opportunity to the OP to clarify anything that might be
misinterpreted, or to enhance the quality of his post to fit within SE
guidelines. </p>

<p>The case of R questions has been debated more than once on our Meta,
and the older thread probably started during the beta: <a href="https://stats.meta.stackexchange.com/q/1/930">How to answer R
questions</a>.
Purely programming questions are generally sent over Stack Overflow. Low
quality questions, however, should not. Apparently, the question that is
referenced in your question is part of this category, according to your
criteria which are certainly well founded, given your experience, and
that of Andrie, on SO. It is, however, hard for some of us to help the
OP reformulate his question so that it sounds acceptable to you, as a
community. Asking SO moderators before migrating is one option and CV moderators do
that on some occasions. Given the large part devoted to the use of R in
statistics on this site, many questions are likely candidates for SO
when they really don't have anything to do with statistics <em>per se</em>, but I
think it would be hard to ask SO moderators each time.</p>

<p>I would love having a well defined set of criteria that a question must
fullfill before it is considered as belonging on Stack Overflow and not
any other site. But it is worth noting that qualifying a question as
crappy is risky: After all, very simple but well posed question are
eligible according to our common FAQ:</p>

<blockquote>
  <p>You should only ask practical, answerable questions based on actual
  problems that you face (...)</p>
</blockquote>

<p>That being said, you and I know how it can be difficult to judge the
quality of a question when we are not following a site on a very regular
basis (this is my case as a user on SO, at least). It is even harder to
decide whether to close a question as a duplicate, or simply as a badly
worded question when it happens.</p>

<p>To sum up, I would be happy to have some concrete illustrations of</p>

<ul>
<li>What is considered strictly OT on SO and should be closed immediately
(possibly, with a sensible comment to accompany such action).</li>
<li>What is considered as a ready-to-migrate question, i.e. without any
intervention from our part.</li>
</ul>

<p>Finally, since you are active on both sites, what would you suggest we put in our FAQ to help users decide on the best site for their question, even if many new users probably don't visit our FAQ before asking their first question :(</p>
