山西省与全国城市男学生身高曲线拟合后生长趋势对比研究

摘要

运用曲线拟合的方法,将全国和山西省城市汉族6-22岁男学生各年龄段断面的身高数据纵向拟合,选取最佳曲线拟合模型,对优化数据比较分析,揭示其内在的变化规律。结果显示：城市汉族6-22岁男学生身高趋势一致,山西省各年龄学生生长速度高于全国水平,20岁趋于稳定,成年男学生身高均值有降低趋势。%By using the methods of curve fitting, this article fits vertically the date of schoolboy at 6-22 years in Han nationality of urban between the whole country and Shanxi Province, selects the best curve fitting model, compares and analyses optimization data, and explores the internal change law. It shows that students at 6- 22 years in Han nationality of urban have the same trend, the growth rate of students at various age in Shanxi Province is higher than the national level, tends to be stable at 20 years, the average height value of adult students is a downward trend.