Sources of Variation in an ExperimentExploration 1.1: Sand CrabsQuantifying Sources of VariationExploration 1.2 – 1.3: Starry navigationComparing Several GroupsExploration 1.4 – 1.5: Golden SquirrelsMore Study Design ConsiderationsExploration 1.6: Cholesterol levels and living altitudeQuantitative/Categorical InteractionsExploration 4.4: FEV and smokingExperiments with Multiple Quantitative Explanatory VariablesExploration 5.1: Biodiesel