Title: Lesson 9-3
Author: mark_cameron
Last saved by: Glencoe Mathematics
Company: McGraw-Hill

Lesson 9-7

Example 1 Choose an Appropriate Display
INTERNET    The table shows the percentages of schools with Internet access over a 7-year period. Select an appropriate type of display to show the data in the table. Justify your answer.
Year | Percent | Year | Percent
1996 | 65 | 2000 | 98
1997 | 78 | 2001 | 99
1998 | 89 | 2002 | 99
1999 | 95 | 2003 | 100

	

Source: National Center for Education Statistics

This data deals with change over time. A line graph would be a good way to show the change over time.

Cat | ||
Dog | ||||
Fish | |
Turtle | |||
Example 2 Construct an Appropriate Display
PETS A survey asked a group of students to name their favorite type of pet. Select an appropriate type of display for the data. Justify your reasoning. Then construct the display.

In this case, there are specific categories. If you 
want to show the specific number, use a bar graph or a pictograph. If you want to show how each part is related to the whole, use a circle graph.