raptop changed the topic of #kspacademia to: https://gist.github.com/pdn4kd/164b9b85435d87afbec0c3a7e69d3e6d | Dogs are cats. Spiders are cat interferometers. | Космизм сегодня! | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer. | We can haz pdf
<bofh>
ugh, wait, actually that makes sense, since the standard deviation of the average for a periodic signal will be garbage itsself.
<egg|zzz|egg>
bofh: not that much, see the graph
<egg|zzz|egg>
bofh: much shittier than independent measurements, of course
<egg|zzz|egg>
but nowhere near what that estimator says
<bofh>
oh *wow*
<egg|zzz|egg>
bofh: which makes sense, that autocorrelation estimator is "what if марков chain glhf" but I can say much more about my signal, not sure how though
<egg|zzz|egg>
bofh: note, the left-hand side of the graph is when we don't have a full period, the function is sin(0.01t) + cos(0.003t) here, so the giant error and terrible error estimates aren't interesting yet
<egg|zzz|egg>
but after 2 π hundred or so, the error of the average is not that bad
<egg|zzz|egg>
bofh: how do i estimate it though
<egg|zzz|egg>
bofh: "what is the standard deviation of the average of *periodic thing* (or linear combination of a handful of periodic things)" has to be a well-known problem, but I can't find anything
<egg|zzz|egg>
the BIPM isn't helpful in that Evaluation of measurement data – Supplement 3 to the "Guide to the expression of uncertainty in measurement" – Modelling is still in preparation
<egg|zzz|egg>
bofh: UmbralRaptop: meow
<bofh>
22:45:01 <@egg|zzz|egg> bofh: how do i estimate it though
<bofh>
that's a trickier question than you seem to think :p
<egg|zzz|egg>
meow
<UmbralRaptop>
Horribly abuse a beta distribution?
* UmbralRaptop
scritches egg|zzz|egg
<bofh>
UmbralRaptop: I mean the answer to a lot of questions in stats is "horribly abuse a \Beta distribution", but that's often patently vile.
<UmbralRaptop>
fair
<egg|zzz|egg>
<bofh> that's a trickier question than you seem to think :p << yes but it sounds like it should be a fairly common one?