1. Objective- To use tables and graphs to organize and represent data.
A collection of numbers and/or
information that describes something.
Design # 1 2 3 4
Area in
square
units 5 9 13 17
Design # 1 2 3 4 5 6
Area 5 9 13 17 21 25
Make a line graph to represent this relationship.

2. Make a line graph to represent this relationship.
Design #
Area 1 2 3 4 5 6 9 13 17 21 25
Make a line graph to represent this relationship.
Area of the Design
Is the relationship
increasing or decreasing? 45 40 35 30 25 20 15 10 5
Increasing
How fast?
Area
4 square units
each design
Design #

3. Students Graduating from Loara High School
Year
1990
1992
1994
1996
1998
2000
2002
Male
128
119
130
106 97 80 90
Female 80 99
104
112 98
116
120
Diff. 48 20 26 -6 -1
-36
-30
What is the difference in male and female graduates?
What trends do you notice?
The number of males is decreasing.
The number of females is increasing.
Make a double bar graph to represent this situation.

4. Students Graduating from Loara High School
Year
Male
Female
1990
1992
1994
1996
1998
2000
2002
128
119
130
106 97 80 90 99
104
112 98
116
120
Students Graduating from Loara High School
140
130
120
110
100 90 80 70 60 50 40 30 20 10
Key
Male
Female
# of
students
‘ ‘ ‘ ‘96 ‘98 ‘00 ‘02
Year

5. Which year showed the greatest difference between
males and females graduating?
Students Graduating from Loara High School
140
130
120
110
100 90 80 70 60 50 40 30 20 10
‘ ‘ ‘ ‘96 ‘98 ‘00 ‘02
Year
# of
students
Male
Female
Key

6. Which year showed the greatest difference between
males and females graduating?
1990
Year
Male
Female
1990
1992
1994
1996
1998
2000
2002
128
119
130
106 97 80 90 99
104
112 98
116
120
Diff. 48 10 26 -6 -1
-36
-30

7. Bar Graphs vs. Line Graphs Bar Graph Line Graph
Ave. Life Span of Animals 70 60 50 40 30 20 10
Life
span in
years
Mouse
Fox
Pig
Chimp
Donkey
Daytime Temperature
4am 8am 12am
6am am 2pm 90 80 70 60 50 40 30
Temp. F
-Used to compare quantities
-Used to show change
over time

8. Represent the data with an appropriate graph.
Occupation
Salary
Teacher
Lawyer
Doctor
Nurse
$55,000
$84,000
$125,000
$42,000
Average Salaries
Title
160140
120
100 80 60 40 20
Bars are
equal
width
Salary in
thousands
Axis
Label
Horiz.
Axis
Teacher Lawyer Doctor Nurse
Scale
Occupation
Marked 0 to 160
in steps of 20
Axis
Label

9. Company Sales vs. Expenses (In Millions)
Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Sales
3.4
5.3
4.8
6.5
7.8
8.9
8.7
Expenses
7.8
6.9
4.5
7.4
8.3
9.4
8.8
Represent the data with an appropriate graph. 10 9 8 7 6 5 4 3 2 1
Key
Sales
Dollars
(in Millions)
Expenses
Jan Feb Mar Apr May Jun Jul
Months

10. Company Sales vs. Expenses (In Millions)10 9 8 7 6 5 4 3 2 1
Dollars
(in Millions)
Jan Feb Mar Apr May Jun Jul
Months
Key
Sales
Expenses
1) Is the company making or losing money?
2) If profit = sales - expenses, at what point did
the company make a profit?