精选优质文档-倾情为你奉上（一） 数据处理1.按照最小二乘法原理编写matlab程序；x=-200 -100 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300y=-5.8914 -3.5536 0 4.0962 8.1385 12.2086 16.3971 20.6443 24.9055 29.129 33.2754 37.3259 41.2756 45.1187 48.8382 52.4103n=16;sx=sum(x);sy=sum(y);sxx=sum(x*x);sxy=sum(x*y);k=(n*sxy-sx*sy)/(n*sxx-sx*sx);a0=(sxx*sy-sx*sxy)/(n*sxx-sx*sx);sprintf(y=%d+(%d)*x,a0,k)x=-200:100:1300;y=a0+k*x;plot(x,y) %绘出曲线运行结果：ans =y=6.e-001+(4.e-002)
