Covariance & Correlation

Step-by-step covariance and Pearson r — means, deviations, products, Cov, then unit-free correlation on a live scatter.

• Foundations
• Vector Math
• Matrix Multiply
• Inverse Matrix
• Eigenvalues & Eigenvectors
• SVD & Orthogonality
• Derivatives

KousKrab — interactive ML simulations in the browser.