EXAMPLE 1 Making a Circle Graph A survey asked, “How often do you check your e- mail?” Of the 100 people asked, 4 responded less than weekly, 23 responded weekly, and 73 responded every day. Display the data in a circle graph. STEP 1 Use a proportion to find the number of degrees you should use to represent each response as a section of a circle graph. Less than weeklyWeeklyEvery day a 360° = a 360° = a 360° = a = 14.4° 14° ≈ b = 82.8° 83° ≈ c = 262.8° 263° ≈

EXAMPLE 1 STEP 2 Draw a circle. Show its center. STEP 3 Use a protractor to draw the first angle measure. Label the section. STEP 4 Draw and label remaining sections. Include a title. The graph shows that most people check their e- mail every day. Making a Circle Graph

EXAMPLE 2 Environment The table shows the number of insect species on the United States endangered species list. Make a line graph of the data. STEP 1 Draw and label the horizontal and vertical scales. STEP 2 Plot a point for each data pair. Making a Box-and-Whisker Plot

EXAMPLE 2 Making a Box-and-Whisker Plot STEP 3 Draw line segments to connect the points. Include a title. The graph shows an increase over time.

GUIDED PRACTICE for Example 1 and 2 Use the table of polling data. 1. Make a circle graph of the data for Week 1. What does the graph show? More people would vote for Ben in week 1 ; ANSWER Who Will You Vote For?

GUIDED PRACTICE for Example 1 and 2 2. Make a line graph of the data for Ben. What does the graph show? The percent of people who would vote for Ben Decreased from week 1 to week 3 ;