线性回归例题.doc

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上传时间: 2024-03-20
关键词: 15.1 16.7 bint 14.5 数学 11.9 15.8 0.4 15.7 17.1
大小 20 KB
描述
x=[17.1 10.5 13.8 15.7 11.9 10.4 15.0 16.0 17.8 15.8 15.1 12.1 18.4 17.1 16.7 16.5 15.1 15.1];
y=[16.7 10.4 13.5 15.7 11.6 10.2 14.5 15.8 17.6 15.2 14.8 11.9 18.3 16.7 16.6 15.9 15.1 14.5];
>> plot(x,y,'*')
>> a=polyfit(x,y,1)
a =
0.9881 -0.1040
>> n=length(y)
n =
18
x=[ones(n,1),x'];
[b,bint,r,rint,s]=regress(y',x);
>> b,bint,s
b =
-0.1040
0.9881
bint =
-0.7655 0.5574
0.9445 1.0316
s =
1.0e+003 *
0.0010 2.3119 0 0.0000
>> rcoplot(r,rint)
目录
15.1/16.7/bint/14.5/数学/11.9/15.8/0.4/15.7/17.1/ 15.1/16.7/bint/14.5/数学/11.9/15.8/0.4/15.7/17.1/