Linear Contrast

How to do a linear contrast with nonparametric regression In R, we can use  sm.regression()  for apply non parametric regression. We add the option model=”linear”  to do a linear contrast.  The example showed here is about results of mba grade  with 3 variables: gender, gmat and gpa. The objetive is estimate gpa given gmat. We not reject linear hypothesis…

Contrasting Effect

How to apply no effect test in R with nonparametric regression For contrast no effect test we’ll use the dataset trawl from sm library, in R. The data refer to a survey of the fauna on the sea bed lying between the coast of northern Queensland and the Great Barrier Reef. The independent variable is Depth, the bottom depth…