Linear regression models the relationship between a dependent and independent variable(s). A linear regression essentially estimates a line of best fit among all variables in the model.

Residual plots can be used to validate assumptions about the regression model. Figure 1 ... Most important, the s.d. of the sampling distributions depend on the variances weighted by values ...

A simple linear regression of Oxygen on RunTime is performed, and a plot of Oxygen*RunTime is requested. The fitted model, the regression line, and the four default statistics are also displayed in ...