Are Chess.com’s Rating Percentiles Inflated?

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Squwuirrel

If you look at the numbers, I should be at around 50% percentile, why is it 80.6%?

asdfghkl123456798

1375 is quite high

Game_of_Pawns
giftedguppy1000 wrote:

If you look at the numbers, I should be at around 50% percentile, why is it 80.6%?

How do you mean? You're more than 300 over the average and the graph peaks in the same place as the average. Why does 80 seem strange?

Santoy

I was very surprised when I first saw the distribution.

In the UK, the grading system has just changed in line with ELO (ELO = BCF * 0.75 +700). In competitive OTB chess, the lowest possible grade was 700, the average club player is 1750 so I was expecting something similar. The graph shows that most members are very young or casual players.

I am a slightly stronger than average club player (Chess.com ratings seem much higher than FIDE ratings) but am in the top 99.7 percentile ( I wish!!!)

KeyLinePie
giftedguppy1000 wrote:

If you look at the numbers, I should be at around 50% percentile, why is it 80.6%?

It's referring to the amount of the curve which is below 1375, not where 1375 falls between the lowest and highest ratings. Looking at the position of 1375 on the chart, it would be approximately in the middle (between ~200 and 3000), but the percentile is talking about the amount of players below 1375, which you can see is the bulk of the blue curve, with only the thin tail (19.4%) above 1375.

Bruno5979

In my opinion :

The 80 % is right !

You are # 92980 player "Daily games" in the 90 last days ok ?

Distribution :

1300 : 87000

1200 : 110000

1100 : 120000

1000 : 123000

etc ...

You see you're not only 50% !!!

 

And  the 1 700 000 players  isn't right, because the not-active players in the 90 last days.

 

Game_of_Pawns

Ah yes, that's what he's looking at. The 93k. I didn't even see that. Yeah, as said above, the 90k will include only active members and the 1.7m will include many more.

drmrboss

 2200 blitz here is 99.5%

2200 blitz in L site is 96.5%

 

A bit over inflated. 

Bruno5979
Game_of_Pawns a écrit :

Ah yes, that's what he's looking at. The 93k. I didn't even see that. Yeah, as said above, the 90k will include only active members and the 1.7m will include many more.

 

For example if you see your blitz rating.

 

You're always 1675 of course, but you have no more percentile and #

au_100

I think its better for a chess website to not try to mimic the fide ratings and instead have their own rating system very different so people quit comparing themselves to their imagined fide rating. But since it will still be an elo system, it'll get critique if too low or high of a number.

Santoy

I think the opposite. I wish that all websites used exactly the same rating system to as closely as possible give an ELO/FIDE rating.

I have never spent so much time on chess as I have over the past few months but I can't wait to be playing OTB again to see how much of my improvement is real.

Sara_202

Your average rating shows exactly what I can not say

nTzT

If you look at the numbers, they are accurate. I am not sure why you see it differently. 50th percentile would be around the 1050 mark.

Game_of_Pawns
Bruno5979 wrote:

For example if you see your blitz rating. You're always 1675 of course, but you have no more percentile and #

Exactly. I'm in the 1.7m but not the 93k. There are many more like me. Never thought I'd say that...

nTzT
Bruno5979 wrote:
Game_of_Pawns a écrit :

Ah yes, that's what he's looking at. The 93k. I didn't even see that. Yeah, as said above, the 90k will include only active members and the 1.7m will include many more.

 

For example if you see your blitz rating.

 

You're always 1675 of course, but you have no more percentile and #

That's because his blitz rating is inactive