랠리포인트제에서 여자 프로배구 득점 내용 및 추이 분석

The purpose of this study is to analyze problems of rally point scoring system and gains and losses of set according to the serve by set score ratio every game score process and change during set is arranged in female professional volleyball games. For this, it is intended for 76 games, 303 sets which were combined with 70 games of regular season and each three games of Playoff and Championship by female professional 5 teams that participated in 2008-2009 Season V-League held from Nov. 22nd, 2008 to Apr. 11th, 2009. Set score ratio and victory probability according to score margin were calculated by percentage and the chi-squared test was conducted to verify gaps between the first score of team with the serve and outcome of it. Conclusion based on these results is as follow: First, the effort to win the 1st set is required as the probability that female teams will win in the games after winning it is 70%. Second, the effort to obtain 20 points earlier is required as the probability that teams will games if they do them earlier is 88.9%. Third, the game result can be somewhat expected when there are 20 points as the ratio that teams win come-from-behind victories after them when audience watch games is 10%. Forth, the first scores of the serve teams have nothing to do with the results of the games. When the above contents are synthesized, the games are dynamic because they are fast processed in the current rally point scoring system. But there is an disadvantage that the results of the game can be somewhat expected because there are no the real charms that turns the tide in the game in the second half of the sets. Therefore, tension should not be reduced in the second half of the games by mixing the rally point scoring system with the side out system.