1. Click the mouse button or press the Space Bar to display the answers.
Transparency 2

2. Splash Screen

3. Make and interpret line graphs
Objective
Make and interpret line graphs
Example 2-2e

4. A visual display of data
Vocabulary
Graph
A visual display of data
Example 2-2e

5. The scale of numbers written up from the lower left corner
Vocabulary
Vertical axis
The scale of numbers written up from the lower left corner
Example 2-2e

6. The categories listed along the bottom of the graph
Vocabulary
Horizontal axis
The categories listed along the bottom of the graph
Example 2-2e

7. A visual display that shows how data changes over a period of time
Vocabulary
Line graph
A visual display that shows how data changes over a period of time
Example 2-2e

8. Example 1 Make and Interpret a Line GraphB
Example 1 Make and Interpret a Line Graph
Lesson 2 Contents

9. Water Consumed per Day (billion gallons)
100
1995 94
1990 92
1985
1980 96
1975 87
1970 77
1965 61
1960
Water Consumed per Day (billion gallons)
Year
U.S. Water Consumption
Source: U.S. Census Bureau
WATER USE Make a line graph of the data at the right.
Decide on a scale and interval
Find the largest number
Find the smallest number
100 61
The intervals must include these 2 numbers
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Example 2-2a

10. Start with 0 in the lower left cornerB
Largest
Smallest 61
Start with 0 in the lower left corner
Remember: Label lines not spaces
We can use 20 for our intervals
Since 100 is the largest number, add one more line
1/1
Example 2-2b

11. Water Consumed per Day (billion gallons)
Label the horizontal axis which is the categories
100
1995 94
1990 92
1985
1980 96
1975 87
1970 77
1965 61
1960
Water Consumed per Day (billion gallons)
Year
U.S. Water Consumption
Source: U.S. Census Bureau
1/1
Example 2-2b

12. Water Consumed per Day (billion gallons)
Label the vertical axis which is the intervals
100 94 92 96 87 77 61
Water Consumed per Day (billion gallons)
1/1
Example 2-2b

13. Water Consumed per Day (billion gallons)
Give the graph a title
100
1995 94
1990 92
1985
1980 96
1975 87
1970 77
1965 61
1960
Water Consumed per Day (billion gallons)
Year
U.S. Water Consumption
Source: U.S. Census Bureau
1/1
Example 2-2b

14. Plot data by putting a dot on the vertical line
100
1995 94
1990 92
1985
1980 96
1975 87
1970 77
1965 61
1960
Water Consumed
Year
1/1
Example 2-2c

15. Connect the dots to make the lineB
Answer:
Connect the dots to make the line
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Example 2-2c

16. Total Snowfall (inches)B
SNOWFALL Make a line graph of the data below.
Yearly Snowfall
Year
Total Snowfall (inches)
1997 23
1998 20
1999 18
2000
2001 17
2002 24
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Example 2-2d

17. B *
Answer
1/1
Example 2-2e

18. B
Assignment
Lesson 2:2B
Line Graphs
4 and All
End of Lesson 2