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

Warm Up Write each fraction as a decimal Course 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 Course Displaying Data A , 342.5, , B , , 342.4, C , , , D , , ,

Learn to display data in bar graphs, histograms, and line graphs. Course Displaying Data

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

Course 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.

Additional Example 1: Displaying Data in a Double-Bar Graph Course Displaying Data 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 Boys Girls212410

Additional Example 1 Continued Course Displaying Data 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.

Check It Out: Example 1 Course Displaying Data 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 Boys Girls449836

Check It Out: Example 1 Continued Course Displaying Data 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.

Course Displaying Data A histogram is a bar graph that shows the frequency of data within equal intervals.

Additional Example 2: Displaying Data in a Histogram Course Displaying Data 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.

Additional Example 2 Continued Course Displaying Data – – – – 0.99 FrequencyMoney ($)

Additional Example 2 Continued Course Displaying Data Histograms do not have spaces between the bars. Helpful Hint Frequency

Check It Out: Example 2 Course Displaying Data 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.

Course Displaying Data 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

Course Displaying Data Check It Out: Example 2 Continued Frequency Hours Spent at Day Care :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

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

Course 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 The Music Shop CD and DVD Sales YearCD’s SoldDVDs Sold

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

Course 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 Perry's Strawberry-Fig Farm Sales YearStrawberry Baskets SoldFigs Sold 19994,0001, ,5002, ,0003, ,5003,200

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

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 Insert Lesson Title Here Course Displaying Data Frequency UnitsFrequency

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

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