Hi there! Rules of div 2 only contests were updated recently (allowing to participate purple in div 2 only rounds). I'm curious does this have an influence on the rating system. So. I've split all participants of this round by divisions and calculated rating change for them independently. You could find this results via following links: div1 only, div2 only. .
Let's define average rating change in the division as a sum of all rating changes of each contestant from this division divided by the number of participants in this division.
| Division | Average rating change |
|---|---|
| div. 1 only | -8.09 |
| div. 2 only | -10.68 |
Let's calculate average rating change for the official result (rating calculates without separating by divisions)
| Division | Average rating change |
|---|---|
| div. 1 | +3.86 |
| div. 2 | -12.21 |
| both | -10.81 |
As we can see, in combined round average purple contestants gain almost 12 additional rating points. In my opinion, this is quite unfair. Your thoughts?
Auto comment: topic has been translated by WasylF (original revision, translated revision, compare)
can we get same stats for div3 ?
sure, average delta in previous div. 3 contest was -10.61. It's close to usual div. 2 round
"As we can see, in combined round average purple contestants gain almost 12 additional rating points."
Can you explain this a little more? I'm not sure how this results from the table...
3.86 - ( - 8.09) = 11.95
So on an average the purple contestant benefits by around 12 points in div 1 + div 2 contests as opposed to div 1 only
Oh, that makes a lot of sense, thanks!