R-squared › R-squared: Measuring Model Fit
Michael BrenndoerferApril 4, 20251 min read
Machine Learning from ScratchAll chapters Part 3 of 9Foundations
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R-squared, also known as the coefficient of determination, is a key metric used to evaluate how well a regression model explains the variability of the dependent variable. This section introduces the formula and its interpretation, then develops a visual intuition for R-squared.