Gents, my theory is:
your current average belong to best 400 ranked rounds.
now those 400 best round are frozen. Example. 58av = (400x58)/400
and you will add 100 round to those frozen ranked rounds.
every new round will be added to that amoun, good or bad.
- let say you made a new score of 58: Av = ((400x58)+58)/401 = 58 (nothing changes)
- let say you made a new score of 57: Av = ((400x58)+57)/401 = 57.997 ~ 58
- let say you made a new score of 52: Av = ((400x58)+57)/401 = 57.985 ~ 57.99
- let say you made a new score of 63: Av = ((400x58)+57)/401 = 58.012 ~ 58.01
I have the scores and names of all the ranked round I made as legend, more than 1200, with all the stats, % averages, best 400 rounds... etc.
So up to now, my theory is correct. but I need to make some more rounds to double check. :)