急求:用MATLAB进行多元回归分析的问题我按网上说的做,可总是运行不成功.原数据如下:x1 = [70 70 70 70 75 75 75 75 79 79 79 79 83 83 83 83];x2 = [24 29 35 42 24 29 35 42 24 29 35 42 24 29 35 42];x3 = [17 24 29 34 24 17 34
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![急求:用MATLAB进行多元回归分析的问题我按网上说的做,可总是运行不成功.原数据如下:x1 = [70 70 70 70 75 75 75 75 79 79 79 79 83 83 83 83];x2 = [24 29 35 42 24 29 35 42 24 29 35 42 24 29 35 42];x3 = [17 24 29 34 24 17 34](/uploads/image/z/5436452-20-2.jpg?t=%E6%80%A5%E6%B1%82%3A%E7%94%A8MATLAB%E8%BF%9B%E8%A1%8C%E5%A4%9A%E5%85%83%E5%9B%9E%E5%BD%92%E5%88%86%E6%9E%90%E7%9A%84%E9%97%AE%E9%A2%98%E6%88%91%E6%8C%89%E7%BD%91%E4%B8%8A%E8%AF%B4%E7%9A%84%E5%81%9A%2C%E5%8F%AF%E6%80%BB%E6%98%AF%E8%BF%90%E8%A1%8C%E4%B8%8D%E6%88%90%E5%8A%9F.%E5%8E%9F%E6%95%B0%E6%8D%AE%E5%A6%82%E4%B8%8B%EF%BC%9Ax1+%3D+%5B70+70+70+70+75+75+75+75+79+79+79+79+83+83+83+83%5D%3Bx2+%3D+%5B24+29+35+42+24+29+35+42+24+29+35+42+24+29+35+42%5D%3Bx3+%3D+%5B17+24+29+34+24+17+34)
急求:用MATLAB进行多元回归分析的问题我按网上说的做,可总是运行不成功.原数据如下:x1 = [70 70 70 70 75 75 75 75 79 79 79 79 83 83 83 83];x2 = [24 29 35 42 24 29 35 42 24 29 35 42 24 29 35 42];x3 = [17 24 29 34 24 17 34
急求:用MATLAB进行多元回归分析的问题
我按网上说的做,可总是运行不成功.原数据如下:
x1 = [70 70 70 70 75 75 75 75 79 79 79 79 83 83 83 83];
x2 = [24 29 35 42 24 29 35 42 24 29 35 42 24 29 35 42];
x3 = [17 24 29 34 24 17 34 29 29 34 17 24 34 29 24 17];
x4 = [26.5 28.5 29.8 30.7 29.8 30.7 26.5 28.5 30.7 29.8 28.5 26.5 28.5 26.5 30.7 29.8];
x5 = [4.2 4.5 4.7 5.0 5.0 4.7 4.5 4.2 4.5 4.2 5.0 4.7 4.7 5.0 4.2 4.5];
y=[171.88 164.21 168.05 152.64 163.66 155.23 158.79 152.25 144.05 141.72 148.15 149.70 143.33 142.66 142.70 141.86];
进行一次或二次回归分析.
急求:用MATLAB进行多元回归分析的问题我按网上说的做,可总是运行不成功.原数据如下:x1 = [70 70 70 70 75 75 75 75 79 79 79 79 83 83 83 83];x2 = [24 29 35 42 24 29 35 42 24 29 35 42 24 29 35 42];x3 = [17 24 29 34 24 17 34
超简单的啊,下面为程序:
X=[ones(length(y),1),x1',x2',x3',x4',x5'];
B=(inv((X'*X)))*X'*y';
b0=B(1)
b1=B(2)
...
b5=B(6)
%%
y=b0+b1*x1...+b5*x5