Statistical independence, what is it? I mean really, what is it?? [General Sta­tis­tics]

posted by ElMaestro  – Denmark, 2020-06-27 23:35 (1257 d 08:23 ago) – Posting: # 21582
Views: 5,154

Hi all,

what is statistical independence in layman's terms?? I thought I had a basic understanding of it, but now I am not so sure.

For example: Wikipedia mentions on the page for the t distribution that t=Z/s where Z and s are independent, and Z = (sample mean - mean) and s is the sample sd divided by square root of n.

Given that any perturbation on the data that changes Z will (may) also change s, I am kind of slightly conflicted regarding my own idea of independence.

I am not so much looking for a textbook explaining what it is, or a link to some web page or other. I probably read those links that are the first 50 on google and got nowhere. Rather, I am humbly looking for an explanation that appeals to my braincells, the number of which is very, very limited.
Muchas gracias.

Pass or fail!
ElMaestro

Complete thread:

UA Flag
Activity
 Admin contact
22,818 posts in 4,784 threads, 1,634 registered users;
30 visitors (0 registered, 30 guests [including 7 identified bots]).
Forum time: 06:58 CET (Europe/Vienna)

The greatest obstacle to discovery is not ignorance 
it is the illusion of knowledge.    Daniel J. Boorstin

The Bioequivalence and Bioavailability Forum is hosted by
BEBAC Ing. Helmut Schütz
HTML5