Page 187 - Math Course 3 (Book 2)

Understanding Stem-and-Leaf Plots

B. Which state has the most varied production? C. What is the median monthly allowance given?
Explain.
A. $25 and $45
California Florida B. $30
7 1 4 C. $30.8
8 4 2 0 0 2 4 D. $32
2 1 3
Answer
2|3 = 32 million lb 2|0 = 20 million lb

California; the data are more
Answer
spread out.

Real World Example
Your Turn! EXAM SCORES

The exam score earned on the first test in a partic-
Real World Example ular class is shown for male and female students.
ALLOWANCE
The stem-and-leaf plot lists the amount of A. Which group of students had the higher test
allowance students are given each month. scores?

Stem Leaf Male Female
0 0 5
1 0 2 2 5 8 8 8 8 2 6
2 0 0 0 4 4 5 5 5 5 9 6 4 7 4 8 8 9
3 0 0 2 2 2 4 4 5 5 6 6 7 4 2 2 0 8 1 3 4 8 9
4 0 2 4 4 5 5 5 5 8 8 9 9 6 5 3 9 2 5 9
5 0 0
2|8 = 82 7|4 = 74
3|1 = 31%
A. males
A. In which interval do most of the monthly B. females
allowances occur? C. Both groups had an equally high score.
D. cannot be determined
A. 0-9 interval
B. 20-29 interval Answer
C. 40-49 interval
D. 50-59 interval B. Which group of students had more varied test
scores?
Answer Male Female
8 2 6
B. What is the difference between the least and 9 6 4 7 4 8 8 9
greatest monthly allowance given?
7 4 2 2 0 8 1 3 4 8 9
A. $0 6 5 3 9 2 5 9
B. $5
C. $50 2|8 = 82 7|4 = 74
D. $495
A. males
Answer B. females
C. Both groups had an equally varied score
D. cannot be determined

Answer

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