<p>I approached a question the wrong way and I would like to ask it again from a different point of view, but it already has an answer.</p>

<p>I asked this question: 
<a href="https://stats.stackexchange.com/questions/234791/estimating-quantiles-with-linear-regression">Estimating quantiles with linear regression?</a></p>

<p>The one answer I received made me realize that I don't have a clear idea of prediction intervals. I should not have mentioned them in the question. However, the answer doesn't answer my question, i.e., how (if at all possible) to estimate quantiles from linear regression. The answer also mentions quantile regression and/or Bayesian inference. This helped me realize that for various reasons I would benefit from an answer within the boundaries of linear regression and frequentist inference, or at least that showed me why it doesn't make any sense to try to estimate quantiles within these boundaries. </p>

<p>Usually, I would delete the question and write a new, clearer one, adding all these details and removing mentions of prediction intervals. However:</p>

<ol>
<li>I cannot delete it since it has an answer (well, I <em>could</em> delete it, but I understand it's not good practice).</li>
<li>Removing all the part on prediction intervals will make the only answer look meaningless, and this also is not nice towards to the answerer.</li>
</ol>

<p>Any suggestions? Maybe write a new question and flag my same old question for duplicate? Would this preserve the reputation of the answerer?</p>
