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The figure illustrates the percentile rank computation and shows how the 0.5 × F term in the formula ensures that the percentile rank reflects a percentage of scores less than the specified score. For example, for the 10 scores shown in the figure, 60% of them are below a score of 4 (five less than 4 and half of the two equal to 4) and 95% are ...
The rating percentage index, commonly known as the RPI, is a quantity used to rank sports teams based upon a team's wins and losses and its strength of schedule.It is one of the sports rating systems by which NCAA basketball, baseball, softball, hockey, soccer, lacrosse, and volleyball teams are ranked.
Beyond points or wins, some system designers choose to include more granular information about the game. Examples include time of possession of the ball, individual statistics, and lead changes. Data about weather, injuries, or "throw-away" games near season's end may affect game outcomes but are difficult to model.
Game score is a metric devised by Bill James as a rough overall gauge of a starting pitcher's performance in a baseball game. It is designed such that scores tend to range from 0–100, with an average performance being around 50 points.
For example, if a team's season record is 30 wins and 20 losses, the winning percentage would be 60% or 0.600: % = % If a team's season record is 30–15–5 (i.e. it has won thirty games, lost fifteen and tied five times), and if the five tie games are counted as 2 1 ⁄ 2 wins, then the team has an adjusted record of 32 1 ⁄ 2 wins, resulting in a 65% or .650 winning percentage for the ...
Percentile scores and percentile ranks are often used in the reporting of test scores from norm-referenced tests, but, as just noted, they are not the same. For percentile ranks, a score is given and a percentage is computed. Percentile ranks are exclusive: if the percentile rank for a specified score is 90%, then 90% of the scores were lower.
The WBSC World Rankings is a ranking system for national teams in baseball, softball, and baseball5.The teams of the member nations of the World Baseball Softball Confederation (WBSC), baseball's world governing body, are ranked based on their tournament results with the most successful teams being ranked highest.
Curve Ball: Baseball, Statistics, and the Role of Chance in the Game. New York: Copernicus Books, 2001. ISBN 0-387-98816-5. A book on new statistics for baseball. MLB Record Book by: MLB.com; Alan Schwarz, The Numbers Game: Baseball's Lifelong Fascination with Statistics (New York: St. Martin's, 2005). ISBN 0-312-32223-2.