Question

the stem-and-leaf plot below represents the number of students in each math class at a school.
class size
1 | 5
2 | 4 8 8
3 | 0 4
key: 1 | 5 = 15 students
how many classes have 28 students?
answer

Explanation:

Step1: Understand the stem-and-leaf plot

The key says \(1|5 = 15\), so stem = tens digit, leaf = units digit.

Step2: Find class size 28

Stem for 28 is 2, leaf is 8. Count leaves =8 under stem 2.

Step3: Count the leaves

Under stem 2, leaves are 4,8,8. Number of 8s is 2.

Answer:

2