The least-squares regression line minimizes the sum of the squares of the residuals, a criterion not often suggested by students. The interactive figure above provides a visual model for the sum of ...

Linear regression is the process of modelling an association between two variables using a straight line, known as the regression line. When a regression line (not necessarily a least squares ...

The regression line is used as a point of analysis when attempting to determine the correlation between one independent variable and one dependent variable.

The residual standard deviation describes the difference in standard deviations of observed values vs. predicted values in a regression analysis.