LAB: Linear Regression on Whiteside data (2)

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Université Paris Cité

Année 2024

Course Homepage

Moodle

# We will use the following packages. 
# If needed, install them : pak::pkg_install(). 
stopifnot(
  require("MASS"),
  require("isotone"),
  require("magrittr"),
  require("lobstr"),
  require("ggforce"),
  require("patchwork"), 
  require("gt"),
  require("glue"),
  require("skimr"),
  require("corrr"),
  require("GGally"),
  require("broom"),
  require("tidyverse"),
  require("ggfortify"),
  require("autoplotly")
)

data(whiteside)

Model comparison

Question

For the Whiteside data, build a linear model where the covariates are the interactions of Insul with powers of Temp (up to degree 5).

Question

Compare model Gas ~ Insul* poly(Temp, 5, raw=T) with models Gas ~ Insul + Temp and Gas ~ Insul * Temp.