January 2011
Beginner to intermediate
720 pages
23h 29m
English
Questions answered in this chapter:
What does it mean when we say that an independent variable has a nonlinear effect on a dependent variable?
What does it mean when we say that the effects of two independent variables on a dependent variable interact?
How can I test for the presence of nonlinearity and interaction in a regression?
What does it mean when we say that an independent variable has a nonlinear effect on a dependent variable?
An independent variable often influences a dependent variable through a nonlinear relationship. For example, if you try to predict product sales using an equation such as Sales=500–10*Price, price influences sales linearly. This ...