This box plot activity lets students compare two distributions - their heart rates before and after exercise. Have students count their heart beats over 20 seconds and enter this data first. Then ask students to do 1 minute of exercise (jumping jacks, running in place, etc.) and count their heart beats again. Ask students what they notice about the distributions using a 5 number summary.

Question 1: How many heart beats did you count in 20 seconds?

Question 2: Which condition is this heart rate from?