Heinkel111 wrote:
^Yes, so it is a median vs average distinction.
The median is 550 ((500+600)/2)) but the average is 1125 ((500+500+600+2900)/4)
So C.600 is above median but below average (mean)
yes, it is the average and not the mean
ps: btw I came up with 1000 instead of 1125, which now totally explains my low blitz and rapid ratings 
(I blundered the one 500, by forgetting to add it)
^Yes, so it is a median vs average distinction.
The median is 550 ((500+600)/2)) but the average is 1125 ((500+500+600+2900)/4)
So C.600 is above median but below average (mean)