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Khan Academy
Khan Academy: Linear Algebra: Least Squares Examples
An instructional video that works through a concrete example of finding the least squares approximation for a system of equations that has no solution. [18:50]
Khan Academy
Khan Academy: Linear Algebra: Least Squares Approximation
A video lesson explaining the least squares approximation for otherwise unsolvable matrix equations. Presents the motivation for why the least squares approximation is useful. Derives the formula for finding the least squares...
Khan Academy
Khan Academy: Linear Algebra: Another Least Squares Example
A video lesson on using the least squares approximation to find the line of best fit for a set of points. Includes a concrete example dealing with a set of 4 points. Finds the equation to the line that is the best approximation of a line...
Khan Academy
Khan Academy: Orthogonal Projections: Least Squares Approximation
A video lesson explaining the least squares approximation for otherwise unsolvable matrix equations. Presents the motivation for why the least squares approximation is useful. Derives the formula for finding the least squares approximation.
Khan Academy
Khan Academy: Orthogonal Projections: Another Least Squares Example
This is a video lesson on using the least squares approximation to find the line of best fit for a set of points. Includes a concrete example dealing with a set of 4 points.