Re: Annual USCF rating distribution report

Dan Heisman <[EMAIL PROTECTED]> writes:

>Time again for my annual USCF Rating distrubution report, this year comparing 
>non-scholastic percentiles
>from 2003 to 2002. Data is from the 2002 and 2003 Annual Supplements. I know (Ken!) 
>this is measuring
>somewhat different populations and not 100% conclusive, but it is still a decent 
>measure. The sample may be
>biased because you could argue that stronger players are less likely to drop their 
>USCF membership, etc.

If you want to look just at the joint population, there were 3020 regular 
and economy adult members with established ratings in the 2002 annual list 
who were also in the 2003 annual list.

Of these, here's the breakdown in 100 point intervals based on the 2002 
list and whether their rating went up or down in the past 12 months:

       Down    Unchanged    Up
 400      1
 500                         1
 600                1        4
 700      3                  6
 800      4         1       11
 900      8         2       13
1000     15                 43
1100     29         2       64
1200     52         6      104
1300     60         4      126
1400    111         7      186
1500    127        14      186
1600    159        15      227
1700    149        22      189
1800    130         8      176
1900    120        10      132
2000     98        20       85
2100     54         3       41
2200     62         8       40
2300     16         1       19
2400     12         1        6
2500      9                  8
2600      3                  3
2700      2                  1

Here's the same information for the combination of scholastic and youth 
members, with a total of 3263 who had established ratings in 2002 and were
on the 2003 list:

       Down    Unchanged    Up
 100      1                 17
 200      1                 14
 300      2                 57
 400     12         1       67
 500     20         2      104
 600     25                169
 700     46         2      217
 800     47         3      275
 900     69                267
1000     54         3      261
1100     50                265
1200     48         3      204
1300     36         1      175
1400     15         2      156
1500     25                121
1600     17         1       99
1700     14                 84
1800     11         1       54
1900      9         1       53
2000      4                 33
2100      7         1       19
2200      1                  9
2300      2                  2
2400      1                  1
2600      1
--
Mike Nolan