u/bobopup

Hi all, I'm trying to get an intuitive understanding of Bessel's correction from a "estimation bias correction" perspective as I find the degrees of freedom approach un-intuitive for me. (For context of the rigor level this is for the CFA Level 1, but I just want to understand the approach to better memorize the formula). I unfortunately was not able to make it "click" with reading other posts of Bessel's correction but did find the video below which I used to try to make sense of it along with chatgpt.

https://www.youtube.com/watch?v=ke8nSbXUJjQ&list=LL&index=1&t=634s

Does the way I did it in the attached make sense?

(Also I am quite new to this community - please kindly let me know if I should post to another thread. THANK YOU!!!)

Hoping this is allowed because the area is technically in Forest Park, but the Dunkin on Harlem and Circle (in front of the Harlem green line stop) was robbed at gunpoint last Wednesday at 3am by a group of four.

Also, wild that the camera footage could identify their vehicles' make but nothing stated about if the license plate was identified.

On a side note, if anyone knows about whether the r/ForestParkIL community is inactive, let me know. Was hoping to make the post there but haven't heard back. I offered to be an admin or mod of some sort too.

Does anyone know if Oak Park and/or Forest Park have any mandates for security personnel for overnight-open establishments (not mentioning River Forest since I can't imagine they have enough late-night open establishments meriting the discussion). I can't imagine it would have been hit if there was clear security there.

*Follow up on this, Forest Park has a monthly Neighborhood Watch Village Hall meeting with one coming up on 9/15, worth bringing this up for those attending.
https://www.forestpark.net/dfp/events/neighborhood-watch-10/?__cf_chl_tk=aSd7lv8ZtcDgKtsDbQX1bKxzm9Q0v1RZyO67vgjHxZI-1789173723-1.0.1.1-qPSVhpy4wiACt2kn0dSt6hLo9nkkMBg9RJ7PLdtENHU