Individual Calculations September 2019
 Qiao, Joey  Total change: -15.60  Rating chartPersonal card
 2019 NAYCC U14 Girls Kingston CAN 2019-08-16
RcRownchangeKK*chgGame
 1499 1542 3.50 7 -0.39 40 -15.60 
  Ke, Rianne wc1688 USA0.5010.20408.00 
  Wisniowski, Natalie wc1640 USA0.5010.13405.20 
  Iyer, Mantra 1328 USA0.501-0.2740-10.80 
  Cao, Joy 1584 USA0.001-0.4440-17.60 
  Rivera Alejandra, Sandoval 1362 MEX0.501-0.2440-9.60 
  Guo, Haotong Hazel 1388 CAN0.501-0.2140-8.40 
  Myrzaibraimova, Aibike 1501 CAN1.0010.444017.60 

Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change)
 

 

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