体育比赛最能体现公平竞争的原则,在同等环境条件下完全依靠自身技能水平的发挥.但也常有个别运动员的比赛成绩与平时的真实水平不相符,这就有了“没有发挥正常水平”或者“超水平发挥”的现象.我们知道运动员的竞技水平是一个随机变量,在比赛中会有上下波动,为了真实地把握一个随机变量,需要进行多次抽样检验,因此有了重复赛制.比如球类比赛的三局两胜制、五局三胜制等.这种赛制的选定有无科学 Sports competitions can best reflect the principle of fair competition, under the same environmental conditions, fully rely on their skills to play.But often there are individual athletes competition scores and usually do not match the real level, which has “did not play a normal level ”Or “ super play ”phenomenon.We know that the athlete’s competitive level is a random variable, there will be fluctuations in the competition, in order to truly grasp a random variable, the need for multiple sample tests, so with Repeat match system, such as the ball game three wins two-game system, five games three wins system, etc. The selection of this game without science