In Exercise 5, arm circumference of a sample of females was predicted from waist measurement. In the scatterplot shown below, arm circumference of the same females is predicted from their body mass index (BMI).

Compare the Exercise 5 and Exercise 7 scatterplots. Which appears to be a better predictor of arm circumference, waist measurement or BMI? Why?

Data form exercise 5

A researcher was interested in predicting the arm circumference of females. In the scatterplot shown below, the females€™ arm circumference is predicted from their waist measurement.

Transcribed Image Text:

50 45 40 35 30 25 20 15 20 25 30 35 40 45 50 BMI Arm Circumference (cm) 45 40 35 25 20 60 80 100 120 140 Waist (cm) Arm Circumference (cm)