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## page was renamed from Econometrics/OrdinaryLeastSquares/MultivariateProof |
Ordinary Least Squares Multivariate Proof
The model is constructed like:
where:
y and ε are vectors of size n
β is a vector of size p
X is a matrix of shape n by p
This is estimated as:
with the constraint:
The partial derivative of this constraint with respect to b is calculated like:
Set this derivative to 0 to find the minimum with respect to b.