Make Bar Graphs

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Name

15.3

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Data Analysis— 5.9.A MATHEMATICAL PROCESSES 5.1.A, 5.1.D, 5.1.E

Make Bar Graphs

Essential Question

How can you display data on a bar graph?

Investigate Investigate Materials ■ bar graph pattern Ms. Lyon’s class took a survey of their favorite sport to watch. They recorded their results in the table below. Use the data in the table to make a bar graph of their favorite sport to watch.

Favorite Sport to Watch Sport Number of Votes

Football

Baseball

Soccer

Other

12

4

6

2

A. Start by labeling the bar graph with important information. What will the title of your bar graph be?

Where will you write the label Sport? Where will you write the scale label Number of Votes?

Favorite Sport to Watch

What labels will the bars of the bar graph have?

The scale for all graphs begins with _. Since this data set is all even numbers, a scale of _ is appropriate for this graph.

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B. Graph the number of students who voted for each sport by drawing and labeling a bar for each survey answer choice. The bar labeled Football will end at _.

The bar labeled Soccer will end at _.

The bar labeled Baseball will end at _.

The bar labeled Other will end at _.

Module 15

557

Draw Conclusions Use the bar graph you made on the previous page for 1–2. 1. Why might you use a scale of 2 instead of a scale of 1 for this bar graph?

2. Explain how using a scale of 4 would change the bar graph.

Share Share and and Show Show

Math Talk Mathematical Processes

Use the tables for 1–3.

Number of Rainy Days Month Number of Days

Number of Sunny Days

April

May

June

20

8

4

Month Number of Days

April

May

June

5

10

15

Explain how knowing multiples of numbers helps you choose an appropriate scale for a graph.

1. A scale of 5 would be more appropriate for a bar graph of the

data in the table titled ______. 2. A scale of 4 would be more appropriate for a bar graph of the

data in the table titled ______.

558

© Houghton Mifflin Harcourt Publishing Company

3. Make bar graphs to display the data in each table.

Name

Problem Problem Solving Solving Use the table and bar graph for 4–6.

Preferred Field Trip Preferred Field Trip Number of Votes

Apple Orchard

6

Museum

2

Planetarium

11

Zoo

4

Number of Votes

Location

15 10 5 0

Apple Orchard

Museum Planetarium

Zoo

Location

4.

What’s the Error? Students in Mr. Tran’s class were surveyed about which of four field trip locations they would prefer to visit: an apple orchard, a museum, a planetarium, or a zoo. The results of the survey are shown in the table. Tori made a graph of the data. What error did she make? How can she correct the error?

5.

What scale could Tori have used to make reading the values of the bars easier? Explain.

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6. Multi-Step Exactly how many more students voted for the zoo

than the museum? Which data display is easier to use to find the answer? Explain.

Module 15 • Lesson 3 559

Mathematical Processes M Model ¥ Reason ¥ Communicate M

Daily Daily Assessment Assessment Task Task Fill in the bubble completely to show your answer. 7. Trevor recorded the skateboards that were sold last month

in a frequency table. He will display the data in a bar graph. How many bars will the graph have?

A

3 bars

C

10 bars

B

4 bars

D

8 bars

Skateboards Sold Last Month Style

A

B

C

Number

8

10

4

Use the table and incomplete graph for 8 and 9.

Shirts Sold Red

Black

Blue

5

10

7

Number

8. Analyze Suppose you are completing the bar graph.

Which scale is best?

A

1

C

12

B

2

D

10

Number of Shirts

Color

Shirts Sold

Color

9. Multi-Step Brandy graphed the data correctly. Which statement about

the graph is true?

A

The bar for black is twice as tall as the bar for blue.

B

The bar for black is twice as tall as the bar for red.

C

The bar for blue is the tallest bar.

D

The bar for blue is the shortest bar.

TEXAS Test Prep 10. Marcy is making a bar graph of the data in the

560

A

2

C

5

B

25

D

1

Favorite Lunch Item Number of Votes

Soup

Salad

Sandwich

20

35

15

© Houghton Mifflin Harcourt Publishing Company

frequency table. What scale should she use?

H o mewo rk and Practice

15.3

Data Analysis—5.9.A MATHEMATICAL PROCESSES 5.1.A, 5.1.D, 5.1.E

Name

Make Bar Graphs

Use the tables for 1–3. 1. A scale of 10 would be more appropriate for a bar graph of the

data in the table titled _____.

Number of Races Won Team

A

B

C

Number of Races

4

8

5

Number of Points Scored 2. A scale of 2 would be more appropriate for a bar graph of the data

in the table titled _____.

Team

A

B

C

Number of Points

20

40

25

3. Make bar graphs below to

display the data in each table.

Favorite Berry

Problem Problem Solving Solving

Type of Berry

A pastry chef surveyed her customers to find out which type of berry is their favorite. The results of the survey are shown in the table and bar graph. Use the table and bar graph for 4–5. 4. What scale was used to make the bar graph? Explain.

Number of Votes

Blackberry

4

Blueberry

8

Raspberry

20

Strawberry

16

20

5. Which berry got the most votes? Which data

display did you use to find the answer? Explain.

Number of Votes

© Houghton Mifflin Harcourt Publishing Company

Favorite Berry 16 12 8 4 0

Blackberry Blueberry

Raspberry Strawberry

Type of Berry

Module 15 • Lesson 3 561

TEXAS Test Prep

Lesson Lesson Check Check Fill in the bubble completely to show your answer. 6. Leon makes a bar graph of the favorite cheese

Favorite Cheese

data in the frequency table. How many bars will the graph have?

Type of Cheese

Number of Votes

Cheddar

12

A

12 bars

C

3 bars

Monterrey Jack

6

B

4 bars

D

2 bars

Mozzarella

10

Swiss

5

7. Felicia makes a bar graph of the favorite citrus

fruit data in the frequency table. Where will the bar for tangerine end?

Favorite Citrus Fruit Fruit Number of Votes

A

12

C

20

B

18

D

3

Grapefruit

Orange

Tangerine

12

15

18

Use the table and incomplete graph for 8–10.

Bookstore Sales New

Used

E-book

Number Sold

35

60

25

8. Which scale is the best choice for completing

the graph?

A

5

B

2

C

4

D

1

9. Multi-Step The number of books the

bookstore donates to a library is one fourth the total number of books sold. How many books are donated to a library?

562

A

95

B

120

C

30

D

40

Type of Book

10. Multi-Step If the data are graphed correctly,

which statement is true?

A

The bar for new books is the shortest bar.

B

The bar for e-books is taller than the bar for new books.

C

The bar for used books is twice as tall as the bar for new books.

D

The bar for used books is more than twice as tall as the bar for e-books.

© Houghton Mifflin Harcourt Publishing Company

Type of Book

Number Sold

Bookstore Sales