主成分分析法在大学生体质测试上的应用_信息与计算科学.doc

摘 要：社会的快速发展，对当代大学生各方面的素质有了更高的要求。除了专业知识外，学生的身体素质同样值得关注。拥有强健的体魄是社会对每人的基本要求。大学生体质健康测试是促进学生体质健康发展，激励学生积极进行身体锻炼的教育手段。学生体质测试，是促进大学生养成体育锻炼的习惯、不断增强体质健康的重要方法。

　　　主成分分析是利用降维的思想，在损失很少信息的前提下把多个指标转化为几个综合指标的多元统计方法．通过主成分分析法，在收集了本校2011年的体能测试数据的基础上，利用本校学生体质测试项目：身高、体重、肺活量、握力、台阶、立定跳远，找出控制这些指标的主要因素，根据各个主成分的贡献率计算出各体测项目的综合得分，按照得分的高低对学生体质综合评价进行排名，并对评价结果进行分析，找出他们之间存在差异的主要原因，科学地指导大学生锻炼身体。

关键词：大学生 体能测试 主成分分析

Abstract:The rapid development of society to the contemporary college students each aspect of quality had higher demand. In addition to the professional knowledge, the students' physical quality also deserves attention. Have strong body is the basic requirement of social on each. Undergraduates' physical fitness test is to improve students' physical health development, and stimulate students' positive physical exercise of education means. Students' physical test, is to promote college students get the habit of physical exercise, and constantly enhanced physique healthy important method.

　　　The principal component analysis is to use dimension reduction ideology, lost little information under the premise of more than the index into several of the comprehensive index of multivariate statistical methods. Through the principal component analysis, in the 2011 years to collect the physical test data, and on the basis of using the students' physical examination project: height, weight, vital capacity, grip, steps, standing long jump, find out the main factors to control these indicators, according to the contribution of each main component of the calculated the total score of the projects it has been revealed, according to the discretion of the score to rank projects it has been revealed, and the evaluation results analysis, find out their differences between the main reason, scientific guide students.

Keywords: college students，fitness test principal，component analysis