回归分析案例.docx

身高0.750.850951.081121161.351511.55161.631.671.711.781.85体重101215172022354148505154596675Matlab实现：h=0750.850.951.081121161.351.511.551.61.631.671.711.781.85;m=101215172022354148505154596675;plot(x,y,*)70605040*4*30201000.20.40.60.011.21.41.61.0可令：m=dha，求系数可用p=polyfit(x,y,n),其中y=Inm,x=Inh,n=1,结果：p=232823由此得d=168,a=23,即有经验公式：m=16.8h2.3。也直接利用Matlab统计工具箱中的命令regress求解，使用格式：