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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
199093 changed files with 3378972 additions and 0 deletions
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Task/Multiple-regression/MATLAB/multiple-regression-1.m Normal file
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n=100; k=10;
y = randn (1,n); % generate random vector y
X = randn (k,n); % generate random matrix X
b = y / X
b = 0.1457109 -0.0777564 -0.0712427 -0.0166193 0.0292955 -0.0079111 0.2265894 -0.0561589 -0.1752146 -0.2577663

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Task/Multiple-regression/MATLAB/multiple-regression-2.m Normal file
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yt = y'; Xt = X';
bt = Xt \ yt
bt =
0.1457109
-0.0777564
-0.0712427
-0.0166193
0.0292955
-0.0079111
0.2265894
-0.0561589
-0.1752146
-0.2577663

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Task/Multiple-regression/MATLAB/multiple-regression-3.m Normal file
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x = [1.47 1.50 1.52 1.55 1.57 1.60 1.63 1.65 1.68 1.70 1.73 1.75 1.78 1.80 1.83]
y = [52.21 53.12 54.48 55.84 57.20 58.57 59.93 61.29 63.11 64.47 66.28 68.10 69.92 72.19 74.46]
X = [x.^0;x.^1;x.^2];
b = y/X
128.813 -143.162 61.960

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Task/Multiple-regression/MATLAB/multiple-regression-4.m Normal file
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b = y * X' * inv(X * X')

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Task/Multiple-regression/MATLAB/multiple-regression-5.m Normal file
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b = y * pinv(X)