Table showing student and teacher times (in seconds) for a speed texting competition in an ordered list. Student times: 19, 19, 21, 24, 24, 25, 29, 30, 30, 33, 41 Teacher times: 18, 27, 28, 31, 33, 33, 36, 47, 51.

◄ 1.9 Stem and leaf diagrams