• Sources of Variation in an Experiment
  • Exploration 1.1: Sand Crabs
• Quantifying Sources of Variation
  • Exploration 1.2 – 1.3: Starry navigation
• Comparing Several Groups
  • Exploration 1.4 – 1.5: Golden Squirrels
• More Study Design Considerations
  • Exploration 1.6: Cholesterol levels and living altitude
• Quantitative/Categorical Interactions
  • Exploration 4.4: FEV and smoking
• Experiments with Multiple Quantitative Explanatory Variables
  • Exploration 5.1: Biodiesel