Comment on Lemmy's active userbase has been stable since September 2025
PeriodicallyPedantic@lemmy.ca 1 week ago
A statistician explain to me why these graphs seem correlated beyond general trend? They both seem to have localized events on the same day, but given their different timescales that doesn’t seem like it should be possible.
I raised the same concern on the other post too, but idk enough about statistics to for sure say something seems fishy.
Die4Ever@retrolemmy.com 1 week ago
(not a statistician) The events that WOULD be synchronized are: instances going down, users being deleted, and new user signups.
Maybe this is enough to make them look like this. Those are the events that cause jumps, whereas users hitting the 6 months of inactive time would just be a steady, stable, gentle slope.
PeriodicallyPedantic@lemmy.ca 1 week ago
Im not sure how these stats are collected, I assume that they query each server for its to make the chart, rather than query every server every day and copy the results.
If they’re really copying the results, then you’re absolutely correct that temporary instances outrages would cause those correlated downward blips, but I’m surprised to hear you wouldn’t just be able to query servers to get this data on demand.
But then again if a server went permanently offline you’d lose that data forever. Hmmm