They both fit Gaussians, just different ones! OLS fits a 1D Gaussian to the set ... | Hacker News

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		MontyCarloHall 4 days ago \| parent \| context \| favorite \| on: Why does a least squares fit appear to have a bias... They both fit Gaussians, just different ones! OLS fits a 1D Gaussian to the set of errors in the y coordinates only, whereas TLS (PCA) fits a 2D Gaussian to the set of all (x,y) pairs.

ryang2718 4 days ago [–]

Well, that was a knowledge gap, thank you! I certainly need to review PCA but python makes it a bit too easy.

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