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273

Chapter

7 Cumulative Practice (HOMEWORK)

Name_________________________________________________________ Date: 2.4.13

Organize the data in the given type of display. Do this on a separate sheet of paper.

1. Circle graph 2. Stem-and-leaf plot

3. Bar graph 4. Box-and-whisker plot

5. Line plot

6. Scatter plot

Find the mean, median, and mode of the data set.

7. 41, 42, 38, 37, 42, 40, 47 8. 2.68, 1.71, 3.02, 2.45, 1.82, 2.30

Choose an appropriate data display for the situation. Explain your reasoning.

9. the types of flowers in a floral arrangement

10. the amount of time spent playing a video game each day

11. comparison of the weights and prices of bags of pet food

Favorite Pattern Plain 50

Stripes 50

Polka Dot 80

Tartan 70

Enrollment

80 72

76 84

52 83

68 91

Favorite Halloween Costume

Ghost 38

Magician 42

Superhero 28

Zombie 32

Tempo of a song (beats per minute)

210 154 178 146

190 166 96 87

160 62 118 130

Month 1 2 3 4 5 6 7 8

Number of school days 21 22 17 14 18 18 21 19

Number of files, x 10 11 12 13 14 15 16 17 Kilobytes of memory, y 908 704 856 1024 952 988 1051 1100

Big Ideas Math Blue Copyright © Big Ideas Learning, LLC Resources by Chapter All rights reserved. 268

7.4 Practice B

Name _________________________________________________________ Date _________

Choose an appropriate data display for the situation. Explain your reasoning.

1. the heights of girls in grades 6 through 12

2. the numbers of computers offered within $100 price ranges

3. the comparison of the number of students and the number of office staff

4. the percentages of income budgeted for food, utilities, housing, gas, and education

Explain why the data set is misleading. Be specific!

5. 6.

7. You spin the spinner 20 times and want to use a data display to show the number of times each of the numbers 1 through 5 occurred. Choose an appropriate data display for the situation. Explain your reasoning.

8. What type of data display is appropriate for showing the median of the data values?

9. A professor wants to use a data display to show the relationship between class sizes and passing rates for college students. Choose an appropriate data display for the situation. Explain your reasoning.

10. A dentist wants to use a data display to show the percentages of clients using different types of toothbrushes. Choose an appropriate data display for the situation. Explain your reasoning.

11. The new executive was making a presentation to the Board of Directors. He used a pictograph to show the weekly profits made by his department during the last 3 months.

a. Explain why this would be an inappropriate use of a data display?

b. Choose an appropriate data display for his situation.

= 30 = 10 = 50

apples pears bananas

Fruits Eaten at School Lunch

2

0

3

5

10

25

30

21–30 31–40 41–50 51–60 61–70 71–80

Age

Occ

urr

ence

s o

f P

neu

mo

nia

Pneumonia