1. Displaying Data 9-6 Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes

2. Displaying Data 9-6 Warm Up Write each fraction as a decimal. 1. 2. 3. 4. 0.4 0.060.7 0.98 2525 49 50 3 50 7 10

3. Displaying Data 9-6 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. 342.3, 342.5, 342.48, 342.52 B. 342.21, 342.47, 342.4, 342.59 C. 342.1, 342.17, 342.56, 342.76 D. 342.34, 342.43, 342.567, 342.56

4. Displaying Data 9-6 Learn to display data in bar graphs, histograms, and line graphs.

5. Displaying Data 9-6 Vocabulary double-bar graph frequency table histogram double-line graph

6. Displaying Data 9-6 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. Displaying Data 9-6 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 read012345 Boys233101 Girls212410

8. Displaying Data 9-6 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. Displaying Data 9-6 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 Sold0510152025 Boys393852 Girls449836

10. Displaying Data 9-6 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. Displaying Data 9-6 A histogram is a bar graph that shows the frequency of data within equal intervals.

12. Displaying Data 9-6 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. $0.35 $2.00 $0.75 $2.50 $1.50 $3.00 $0.25 $1.00 $1.00 $3.50 $0.50 $3.00 First, make a frequency table with intervals of $1.00. Then make a histogram.

13. Displaying Data 9-6 Additional Example 2 Continued $0.35 $2.00 $0.75 $2.50 $1.50 $3.00 $0.25 $1.00 $1.00 $3.50 $0.50 $3.00 33.00 – 3.99 22.00 – 2.99 31.00 – 1.99 40 – 0.99 FrequencyMoney ($)

14. Displaying Data 9-6 Additional Example 2 Continued Histograms do not have spaces between the bars. Helpful Hint Frequency

15. Displaying Data 9-6 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. Displaying Data 9-6 Time Spent at Day Care Frequency 0:00 to 0:302 0:31 to 1:002 1:01 to 1:302 1:31 to 2:004 2:01 to 2:301 2:31 to 3:003 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 Check It Out: Example 2 Continued

17. Displaying Data 9-6 Check It Out: Example 2 Continued Frequency Hours Spent at Day Care 0 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. Displaying Data 9-6 A double-line graph is used to show how two related sets of data change over time.

19. Displaying Data 9-6 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 YearCD’s SoldDVDs Sold 19983002735 200030981057 200246853010 200458044047

20. Displaying Data 9-6 Additional Example 3 Continued Plot the data. The graph shows about 5,250 CDs and 3,500 DVDs were sold in 2003. The Music Shop CD and DVD Sales Number Sold Year

21. Displaying Data 9-6 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 YearStrawberry Baskets SoldFigs Sold 19994,0001,200 20014,5002,000 20038,0003,500 20055,5003,200

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

23. Displaying Data 9-6 Standard Lesson Quiz Lesson Quizzes Lesson Quiz for Student Response Systems

24. Displaying Data 9-6 Lesson Quiz: Part I 1. Make a double-bar graph.

25. Displaying Data 9-6 Lesson Quiz: Part II 2. Make a histogram with intervals of 5 using the following data set: 7, 12, 8, 4, 4, 3, 6, 1, 14, 19, 8, 9 UnitsFrequency 0-44 5-95 10-142 15-191

26. Displaying Data 9-6 Lesson Quiz: Part III 3. Estimate the temperature on January 6 in 2004 and 2005 using the graph below. 2005: 31°F, 2004: 30°F

27. Displaying Data 9-6 1. Estimate the rainfall on December 8 in 2003 and 2005 using the graph below. A. 2003: 3.5 in.; 2005: 2 in. B. 2003: 2 in.; 2005: 3.5 in. C. 2003: 3.5 in.; 2005: 3.5 in. D. 2004: 2 in.; 2005: 2 in. Lesson Quiz for Student Response Systems

28. Displaying Data 9-6 2. Use the graph to identify the days on which toy trucks were sold more than toy trains. A. Mon, Fri B. Tues, Weds, Thurs C. Mon, Thurs D. Tues, Weds, Fri Lesson Quiz for Student Response Systems