Machine Learning, Data Science, Dimensionality Reduction, Intuition, Linear Algebra.
matrix: Obviously, cov(x, y) = cov(y, x). So the matrix is symmetric. 4. Generalization Extending this idea to more that 3 point in the dataset is straightforward. We would need 4+ dimensional plot to represent the examples, but there will still be only two vectors for two features, x and y, and