1. 9-5 Displaying Data Warm Up Problem of the Day Lesson Presentation
Course 3

2. 9-5 Displaying Data Warm Up Write each fraction as a decimal. 1. 2.
Course 3
9-5
Displaying Data
Warm Up
Write each fraction as a decimal. 2 5 49 50
0.4
0.98 3 50 7 10
0.06
0.7

3. 9-5 Displaying Data Problem of the Day
Course 3
9-5
Displaying Data
Problem of the Day
Your job at the local library is to shelve the returned books. To correctly put the books on the shelves, you need to arrange them in order according to their numbers. Which order is correct? C
A , 342.5, ,
B , , 342.4,
C , , ,
D , , ,

4. Course 3
9-5
Displaying Data
Learn to display data in bar graphs, histograms, and line graphs.

5. Insert Lesson Title Here
Course 3
9-5
Displaying Data
Insert Lesson Title Here
Vocabulary
double-bar graph
frequency table
histogram
double-line graph

6. Course 3
9-5
Displaying Data
A double-bar graph is used to display and compare two sets of data. You can organize data using a frequency table by listing items according to the number of times the items occur.

7. Additional Example 1: Displaying Data in a Double-Bar Graph
Course 3
9-5
Displaying Data
Additional Example 1: Displaying Data in a Double-Bar Graph
Make a double-bar graph.
The following are the number of books read in one month by some boys and girls in Grade 8.
Books read 1 2 3 4 5
Boys
Girls

8. Additional Example 1 Continued
Course 3
9-5
Displaying Data
Additional Example 1 Continued
Make a double-bar graph.
Frequency
Books read
The frequencies are the heights of the bars in the graph. Use a different color to represent each gender.

9. 9-5 Displaying Data Check It Out: Example 1 Make a double-bar graph.
Course 3
9-5
Displaying Data
Check It Out: Example 1
Make a double-bar graph.
The following are the number of tickets sold in one week by the boys and girls in Grade 8.
Tickets Sold 5 10 15 20 25
Boys 3 9 8 2
Girls 4 6

10. Check It Out: Example 1 Continued
Course 3
9-5
Displaying Data
Check It Out: Example 1 Continued
Make a double-bar graph.
Frequency
Tickets Sold
The frequencies are the heights of the bars in the graph. Use a different color to represent each gender.

11. Course 3
9-5
Displaying Data
A histogram is a bar graph that shows the frequency of data within equal intervals.

12. Additional Example 2: Displaying Data in a Histogram
Course 3
9-5
Displaying Data
Additional Example 2: Displaying Data in a Histogram
Jimmy surveyed 12 children to find out how much money they received from the tooth fairy. Use the data to make a histogram.
First, make a frequency table with intervals of $1.00. Then make a histogram.

13. Additional Example 2 Continued
Course 3
9-5
Displaying Data
Additional Example 2 Continued
Money ($)
Frequency
0 – 0.99 4
1.00 – 1.99 3
2.00 – 2.99 2
3.00 – 3.99 3

14. Additional Example 2 Continued
Course 3
9-5
Displaying Data
Additional Example 2 Continued
Frequency
Histograms do not have spaces between the bars.
Helpful Hint

15. 9-5 Displaying Data Check It Out: Example 2
Course 3
9-5
Displaying Data
Check It Out: Example 2
Tonya surveyed 14 children at an after school day care to find out how many hours they spend there. Use the data to make a Histogram.
2:00 1:40 3:00 0:30 1:00 1:30 2:30
0:30 2:45 1:00 2:00 1:35 1:30 3:00
First, make a frequency table with intervals of 30 minutes. Then make a histogram.

16. Check It Out: Example 2 Continued
Course 3
9-5
Displaying Data
Check It Out: Example 2 Continued
2:00 1:40 3:00 0:30 1:00 1:30 2:30
0:30 2:45 1:00 2:00 1:35 1:30 3:00
Time Spent at Day Care
Frequency
0:00 to 0:30 2
0:31 to 1:00
1:01 to 1:30
1:31 to 2:00 4
2:01 to 2:30 1
2:31 to 3:00 3

17. Check It Out: Example 2 Continued
Course 3
9-5
Displaying Data
Check It Out: Example 2 Continued
Frequency
Hours Spent at Day Care 1 2 3 4 5
0:00 to
0:30
0:31 to
1:00
1:01 to
1:30
1:31 to
2:00
2:01 to
2:30
2:31 to
3:00

18. Course 3
9-5
Displaying Data
A double-line graph is used to show how two related sets of data change over time.

19. Course 3
9-5
Displaying Data
Additional Example 3: Displaying Data in a Double-Line Graph
Make a double-line graph of the given data. Use the graph to estimate the number of CDs and DVDs sold in 2003.
The Music Shop CD and DVD Sales
Year
CD’s Sold
DVDs Sold
1998
3002
735
2000
3098
1057
2002
4685
3010
2004
5804
4047

20. 9-5 Displaying Data Additional Example 3 Continued Plot the data.
Course 3
9-5
Displaying Data
Additional Example 3 Continued
Plot the data.
The Music Shop CD and DVD Sales
Number Sold
Year
The graph shows about 5,250 CDs and 3,500 DVDs were sold in 2003.

21. 9-5 Displaying Data Check It Out: Example 3
Course 3
9-5
Displaying Data
Check It Out: Example 3
Make a double-line graph of the given data. Use the graph to estimate the number of Strawberries and Figs grown in 2002.
Perry's Strawberry-Fig Farm Sales
Year
Strawberry Baskets Sold
Figs Sold
1999
4,000
1,200
2001
4,500
2,000
2003
8,000
3,500
2005
5,500
3,200

22. 9-5 Displaying Data Check It Out: Example 3 Continued Plot the data.
Course 3
9-5
Displaying Data
Check It Out: Example 3 Continued
Plot the data.
Perry’s Strawberry-Fig Farm Sales
Number Sold
Year
The graph shows about 6,250 Strawberry Baskets and 2,800 Figs were sold in 2002.

23. Insert Lesson Title Here
Course 3
9-5
Displaying Data
Insert Lesson Title Here
Lesson Quiz: Part I
1. Make a histogram with intervals of 5 using the following data set: 7, 12, 8, 4, 4, 3, 6, 1, 14, 19, 8, 9 8 7 6 5 4 3 2 1
Frequency
Units
Frequency
0-4 4
5-9 5
10-14 2
15-19 1

24. Insert Lesson Title Here
Course 3
9-5
Displaying Data
Insert Lesson Title Here
Lesson Quiz: Part II
2. Estimate the temperature on January 6 in 2004 and 2005 using the graph below.
2005: 31°C, 2004: 30°C

25. Insert Lesson Title Here
Course 3
9-5
Displaying Data
Insert Lesson Title Here
Lesson Quiz: Part III
Use the graph for problems 3–4.
3. On what day did both girls exercise for 30 minutes?
Friday
4. On what day(s) did Ana exercise longer than Sue?
Monday, Wednesday, Thursday, and Saturday