0pt;font-family:”Verdana”,sans-serif;
color:blue’>Beer sales vs. 02*IQ. The term
regression has stuck and has even mutated from an intransitive verb
into a transitive one since Galton’s time.
The very simplest case of a single scalar predictor variable x and a single scalar response variable y is known as simple linear regression. 0pt;font-family:
“Verdana”,sans-serif’> on X when we
estimate a linear equation for predicting Y from X