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2
votes
1answer
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Proof of normal equation in regression using tensor notation
I'm struggling with a proof of the normal equation, so I posted a question which hopefully will get resolved soon. However, I mentioned there that I'm uncomfortable with the proofs dealing with matrix ...
4
votes
2answers
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Correct enunciation of $ \, \sum \big( {Y_{i}}-{ \hat{Y}_{i}} \big)^2$
How can I enunciate this notation correctly, could you show me that, please?
$$ \sum \big( {Y_{i}}-{ \hat{Y}_{i}} \big)^2 $$
Thank you very much.
