The following represent the ages of students in a class: 19, 23, 21, 19, 19, 20, 22, 31, 21, 20
If a stem and leaf plot were to be developed from this, how many stems would there be?
A)2
B)3
C)4
D)5
E)10

Question

Quizplus · Accepted Answer

The stems represent the leading digits of the numbers, which in this case are 1 and 2, indicating the tens place. Since the ages range from 19 to 31, the stems needed are 1 (for ages in the 10s) and 2 (for ages in the 20s), and a single stem for 3 (for the age 31). Therefore, there are 3 stems in total.

The Following Represent the Ages of Students in a Class