Instructional Video

Khan Academy: Proof (Pt 3) Minimizing Squared Error to Regression Line

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Video is the fourth of five related videos about deriving the formula for the least squares regression line. This video shows using partial derivatives and setting them equal to 0 to get closer to deriving the formula for m and b. It explains and shows visually what the partial derivatives represent as far as points on the best fitting line. [10:54]

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