Derivation4Variance and Covariance

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This video is part 4 of a 6-part lecture. The easiest way to see the entire lecture is this link: https://sites.google.com/wellesley.ed... • This video is brought to you by the Quantitative Analysis Institute at Wellesley College. The material is best viewed as part of the online resources that organize the content and include questions for checking understanding: https://www.wellesley.edu/qai/onliner...

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