How can i write this in Matlab?
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Walter Roberson
le 28 Mar 2020
The summation can be split to and each of those Σ can be translated into a sum() call.
With a small bit of cleverness you can also replace two of the sums with var() calls.
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Ameer Hamza
le 28 Mar 2020
Modifié(e) : Ameer Hamza
le 28 Mar 2020
If x and y are 1D vectors then try something like this.
x = rand(100, 1);
y = rand(100, 1);
x_bar = mean(x);
y_bar = mean(y);
b_hat = sum(x-x_bar)*sum(y-y_bar)/sum((x-x_bar).^2);
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