How can I make a linear regression coefficient calculation algorithm

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Ihor
Ihor 2022-12-4
回答： Sudarshan 2022-12-7
function [alpha, beta] = linreg( x, y )
beta = cov( x, y ) / var( x ) ;
% ...
end
I wrote this code and I cant undestand how can I use thease formules, which I found:

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Sudarshan
Sudarshan 2022-12-7
Hi Ihor,
Based on the equations, you have already calculated the “beta” value. Now, all you need to do is find the mean value of the vectors x and y (the second equation), and then use them to calculate the “alpha” value.
To calculate the mean value of the vectors, use the “mean” function documentation below:
https://in.mathworks.com/help/matlab/ref/mean.html
You will need to iteratively find the correct “alpha” and “beta” values that fit for the vectors “x” and “y”. To understand linear regression better, refer to the linear regression documentation below:
https://in.mathworks.com/help/matlab/data_analysis/linear-regression.html

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