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Regression Analysis Prof. Soumen Maity Department of Mathematics Indian Institute of Technology, Kharagpur Lecture - 2 Simple Li
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![Solved [Matrix form] Showing the variance of beta hat | Chegg.com](https://media.cheggcdn.com/media%2F277%2F2776733a-03bc-4e54-aefd-12909f95ed58%2FphpbU6Be9.png "Solved [Matrix form] Showing the variance of beta hat | Chegg.com")