Can anyone explain me what is the stat "ex: -33 or +55 ". When i open another user account appears her stats (if has public ) and when see "Compared to you" i tried to understand what means, can anyone explain to me what is the formula of this stat?
The +40 is a measure of how closely Col Needham's and my ratings match. The technical name for this is Pearson correlation.
The value can range from -100 (two people perfectly disagree) and +100
(two people perfectly agree). Most of the values I've seen on IMDb range
from around -20 to +60.
If you look at Col Needham's profile you will see something different.