<p>Today I found something strange, a question that is marked as a duplicate of another question that is closed as off-topic (while IMHO it was not off-topic, but that is a meta off-topic comment in here).</p>

<p>Q1: <a href="https://stats.stackexchange.com/questions/32248/effect-size-mean-squared-error-from-linear-mixed-model-in-r">Effect Size/Mean Squared Error from Linear Mixed-Model in R</a></p>

<p>Q2: <a href="https://stats.stackexchange.com/questions/66120/partial-eta2-for-repeated-measures-anova-with-rs-car-package">Partial $\eta^2$ for repeated measures ANOVA (with R&#39;s car package)</a></p>

<p>This kind of "duplicates" make no sense: if the question is a duplicate of an off-topic question, then it is also off-topic so should be closed on those grounds. On the other hand, marking questions as duplicates of unanswered questions also makes no sense, as it does not provide any help to those who asked.</p>

<p>This is of course closely linked to another discussion on meta: <a href="https://stats.meta.stackexchange.com/questions/1867/what-should-be-our-policy-on-duplicate-answers">What should be our policy on duplicate answers?</a> </p>

<p>What do you think?</p>

<p>IMHO, it makes sense to mark questions as duplicates if there exists (1) a real duplicate question, (2) with a high quality answer because if there is a duplicate with one-sentence answer, then it is no help to redirect to it (generally, not always).</p>
