Regression with a single predictor
Data for which the models of this chapter may be appropriate can be displayed as a scatterplot. The focus will be on the straight line model, though the use of transformations makes it possible to accommodate specific forms of non-linear relationship within this framework. By convention, the x-variable, plotted on the horizontal axis, has the role of explanatory variable. The y-variable, plotted on the vertical axis, has the role of response or outcome variable.
Many of the issues that arise for these simple regression models are fundamental to any study of regression methods. Various special applications of ...