Refer to Exercise 20.

a. Explain why it isn’t correct to say that the correlation is 0.86 g/kg.

b. What would happen to the correlation if the variables were reversed on the scatterplot? Explain your reasoning.

c. What would happen to the correlation if brain weight was measured in kilograms instead of grams? Explain your reasoning.

Exercise 20.

The following scatterplot plots the average brain weight (in grams) versus average body weight (in kilograms) for 96 species of mammals. There are many small mammals whose points overlap at the lower left.

Transcribed Image Text:

4500 Elephant 4000 3500 3000 2500 2000 • Dolphin Human 1500 1000 • Hippo 500 400 800 1200 1600 2000 2400 2800 Body weight (kg) Brain weight