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57KiB, 680x434, why.png
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Algebra pleb trying to migrate from univariate to multivariate

Anon No.13781531 ViewReplyOriginalReport
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Trying my best to translate my univariate knowledge into the the multivariate space. Explain why: A^T ? A = 1x1 matrix, which allows us to get the standard diviation: ? = ?sqrt(A^T ? A).
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