2/11/2026

See Sec3.4R and Sec3.6R

• Nested F-test
  • Sequential Sums of Squares
• Polynomial Regression
  • Quadratic
• Second Order Models

See Sec3.5R

• Multicollinearity

R Demonstrations

• See GoogleDrive\Stat206-DataAnalysis-F2023\2eMarkkdown\Sec3.4.Rmd
• See GoogleDrive\Stat206-DataAnalysis-F2023\2eMarkkdown\Sec3.6.Rmd
• See GoogleDrive\Stat206-DataAnalysis-F2023\2eMarkkdown\Sec3.5.Rmd

R LAB - in class exercises

• Fit a two predictor model for the fish weights (use Perch data). Don't forget to include the interaction term.
• Exercises 3.7, 3.37, 3.38, 3.40, 3.41, and 3.57

Please read Section 4.1 for class on Friday.