July 2022
Beginner
266 pages
7h 36m
English
This chapter introduces multiple regression analysis. Section 4.2 begins where Section 3.6 left off; we examine the association between x1 and y while simultaneously controlling for a second and a third x-variable, x2, and x3. Section 4.3 then formalizes the classic multiple linear regression equation and discusses the linear regression model per se.
We have thus far been concerned with linear regression. That is, we have assumed that a straight regression line could summarize the association between x1 and y. Sometimes, however, such a straight line is too simplistic a representation of how x1 relates to y. More precisely, ...