<p>I would go for choice 3.  Something along the lines of bouncing to Stack Overflow if the question is purely about implementation. Such as:</p>

<ul>
<li><p>How do I do x in R?</p></li>
<li><p>Function Y/Script Z is not working, Help!</p></li>
</ul>

<p>But if the question has to do with understanding some theoretical aspect of statistics and then carrying those concepts forward into implementation using a tool, R or otherwise, then I would vote that Stats should have a home for it.</p>

<p><strike></p>

<h3>Update</h3>

<p>I have been tagging questions that may be too heavy on the programming as "possibly-off-topic":</p>

<p><a href="https://stats.stackexchange.com/questions/tagged/possibly-off-topic">https://stats.stackexchange.com/questions/tagged/possibly-off-topic</a></p>

<p>This way, we can easily locate them once we come to a consensus on this issue.
</strike></p>

<p>Retracted- <a href="https://stats.meta.stackexchange.com/questions/72/dont-use-possibly-offtopic">see here</a>.</p>

<p>If you find a question that you think is off-topic, link it to the appropriate discussion on meta so that it may be tracked.  If there is no discussion on Meta yet, consider startin one!</p>
