You all might already know this, but...I agree that a 10-sigma or 25-sigma event is not something that happens hundreds of times a year....
I learned only today that "10-sigma" and "25-sigma" are just metaphors for "unlikely" and aren't meant to indicate an actual probability (10 sigma = 1.523970×10e-23 so yeah, less than a hundred times per year).
Here's an old thread discussing the quote: viewtopic.php?t=152282.
And an essay discussing misuse or misunderstanding of standard deviation: https://lukenotricks.wordpress.com/2010 ... how%20much
Now, back to your Black Friday shopping.
Statistics: Posted by Doctor Rhythm — Sat Nov 29, 2025 1:09 am — Replies 14 — Views 2025