The coefficient of determination, often denoted as R-squared, is a statistical measure that represents the proportion of the variance in the dependent variable that can be explained by the independent variable(s). In other words, it shows how well the regression line fits the data points.
Related terms
Regression Line: A line that best represents the relationship between two variables based on their observed values.
Correlation: A statistical measure that indicates how strongly and in what direction two variables are related.
Residuals: The differences between observed and predicted values in a regression analysis.