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.
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 _.
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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
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.
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.
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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
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.