ok, the percentages are for a level 100 say, 89717 divided by 6015760 should be = 0.0149136601194197. so out of the total players that pct are rated in the 100's. I don't remember what the other columns represent right now.
How many folks on chess.com are rated in each level, step by 100?
Sort:
The 4th column is what one gets by scaling down to 25,000. For example, at the rating level of 900, the percent is 0.085853. That times 25,000 is 2146.328976, which rounded off gives the value in column 4.
This holds true up to the 2100 level. Beyond that it goes haywire.
The 5th column is the sum of everything above it in the 4th column + 1. So the value for the 900 level in the 5th column is the sum of the 4th column from 100 to 800. Some of these numbers are off by 1, which I expect is some kind of rounding error. Also the value for 3200 is off by 100.
The 6th column is the sum of the 4th and 5th.
Feb 29, 2024
0
#6
It is coming back. rubik, I am using 25000 instead of 6 million and applying the pcts to a population of 25000. so. 0.014914 times 25000 us 342.85 rounded up to 343. Do that for each of the pcts against 25000 and then the numbers kinda make sense.
scooter, that is what I am trying to remember.
The data in column 1 is obvious. The data in column 3 is percentages of the total. Columns 4-6 are based on scaling to 25,000. So the only thing missing is the one column that really matters.
The most annoying developer (of programs or statisics or whatever) I've ever met is myself. I do stuff like this, don't write anything down, because it's easy to remember, then don't. Good luck remembering.
Feb 29, 2024
0
#8
at 77 years old, my memory is slipping. I know I did those calculations for a reason, but dam if I can remember today what they were. But, your responses got my brain fluid working so after a good long nap, I might wake up with an epiphany.
Feb 29, 2024
0
#9
I think I remember how I was able to compile the percentages. WAY way back, when I first joined chess.com, the total number of players at each level was published and available here on chess.com. I was curious to see what percent of the total membership these numbers represented so that I could determine how many players would be represented no matter the total number of participants. So, that is why I made those calculations. whew.
Mar 1, 2024
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#11
ahhhh, that is cool. So, those numbers seem to seem to coincide with what I saw back then. Thank you for the update. I have closed my competition, by the way.
Mar 1, 2024
0
#12
And you can easily get the json if you want to update your numbers.
https://www.chess.com/callback/leaderboard/live/sidebar/standard/stats
{
"rank": null,
"percentile": null,
"stats": {
"rating_distribution": {
"100": 1720825,
"200": 2945662,
"300": 3667848,
"400": 4412803,
"500": 4256737,
"600": 3872437,
"700": 3652472,
"800": 2890598,
"900": 2213907,
"1000": 1735383,
"1100": 1301699,
"1200": 998943,
"1300": 700177,
"1400": 495814,
"1500": 353630,
"1600": 255180,
"1700": 172663,
"1800": 116079,
"1900": 73464,
"2000": 51932,
"2100": 28610,
"2200": 15089,
"2300": 7161,
"2400": 2808,
"2500": 896,
"2600": 263,
"2700": 110,
"2800": 19,
"2900": 7,
"3000": 1
},
"avg_rating": "634.0615",
"player_count": 69394862
},
"user_stats": {
"win_count": 20,
"loss_count": 64,
"draw_count": 9
},
"user_rating": 1372
}
Mar 1, 2024
0
#13
thank you for taking the time to resurect that API. I think that is what I did then. It is pretty cool to see where you stand against all 6 plus million chess players around the world. It might be interesting to associate where all the players stand by country to see which country is the strongest by chess.com standards. What do ya think?
I'm sure someone has the final say about
who is that?
on the phone
Way back when I was creating the 4teamchess competitions, I calculated how many players there were by chess.com rating. I generated a spreadsheet to illustrate the differences. But now I have forgotten how I did it. Please take a look and see if you can figure out how I can update the percentage to current numbers?: Back then there were 6 million 15 thousand players. I know I used information that was readily available here.