Question
II.14. Brain and body. The correlation between body weight and brain weight is r = 0.86. How well does body weight explain brain weight for mammals? Compute r2 to answer this question, and briefly explain what r2 tells us.
Figure II.3: Figure II.3 Scatterplot of the average brain weight (grams) against the average body weight (kilograms) for 96 species of mammals, Exercises II.11 through II.16.