参数估计是统计推断的重要内容之一 ,运用统计学中的“ X -R”(平均数、极差 )管理图法分析研究体育课的运动负荷 (心率表示 ) ,在体育教学质量管理中来“发现异常” ,有利于课堂的组织与控制运动负荷的质量管理工作 . Parameter estimation is one of the most important contents of statistical inference. Using the “X-R” (average, very poor) management graph in statistics to study the physical exercise load (heart rate) in physical education class, “Abnormal discovery” is conducive to the organization of the classroom and quality control work to control the exercise load.