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05:34
@XanderHenderson Thanks :) But it seems that we agree that the convention varies depending on regional variation -- which means that there's no one "right" answer. I remain unconvinced that this isn't a matter of opinion, but I do appreciate being able to discuss it :)
 
1 hour later…
 
1 hour later…
07:49
Not an answer but has two upvotes and NAA review failed... @XanderHenderson @RRL @BillDubuque
 
3 hours later…
11:40
[ SmokeDetector | MS ] Link at end of answer (60): Sample size requirements in survey by Harish Vaid on math.SE
 
3 hours later…
14:12
@postmortes :)
 
7 hours later…
20:44
Incorrect accepted answer with 13 upvotes, cf. my comment there. The other answer also has the same problem.

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