Khan Academy on a Stick

Calculating R-Squared

Calculating R-Squared to see how well a regression line fits data

Linear regression and correlation

Correlation and Causality
Fitting a Line to Data
Squared Error of Regression Line
Proof (Part 1) Minimizing Squared Error to Regression Line
Proof Part 2 Minimizing Squared Error to Line
Proof (Part 3) Minimizing Squared Error to Regression Line
Proof (Part 4) Minimizing Squared Error to Regression Line
Regression Line Example
Second Regression Example
R-Squared or Coefficient of Determination
Calculating R-Squared
Covariance and the Regression Line

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This collection was created August 2013.