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Chess Tournament Pairings

Summary of Rated Player Distributions
2006-07 Scholastic Events

Notes:

  1. The individual ratings used in these calculations represent the players who participated in the tournaments which had pairings done by Jim Aman.
  2. The only tournaments not included in the database are the 2007 Ohio Middle School and High School Championships.
  3. Each player is represented in the database only once.
  4. The player's highest rating at one of the included tournaments was used when that person played in more than one event.
  5. For players who were unrated at the time of play, the rating as of 4/24/07 was used.
By the Numbers!
Grade
N
Mean
Min
Median
Max
K
1
327
327
327
327
1
8
504
227
384
1097
2
8
465
100
528
667
3
24
599
100
594
1083
4
26
569
100
560
1250
5
50
850
100
856
1532
6
53
777
100
748
1782
7
62
827
100
808
2035
8
44
861
100
875
1775
9
19
890
385
866
1546
10
25
1065
100
1026
1886
11
14
1185
513
1201
1740
12
15
1001
217
1165
1556
Distribution by Grade
Rating Frequencies by Grade
Distribution of Individual Ratings by Grade

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4/24/07