Constructing Graphs
Why construct graphs?
• Graphs are visual aids that help people
understand information.
Let’s make a graph.
• Take a survey of the information you need.
• A survey is a tool you use to organize
information.
• You need questions that gather information.
• Example - How many students in 1st and 2nd
period like chocolate, vanilla or strawberry ice
cream?
Surveys, Line Plots, and
LINE PLOTS
Frequency Tables
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
FREQUENCY TABLES
X
X
X
X
X
Vanilla
10
Chocolate
15
Strawberry
5
Vanilla Chocolate Strawberry
1ST PERIOD
1ST PERIOD
Surveys, Line Plots, and
LINE PLOTS
Frequency Tables
FREQUENCY TABLES
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Vanilla
11
Chocolate
10
Strawberry
4
Vanilla Chocolate Strawberry
2ND PERIOD
2ND PERIOD
Surveys, Line Plots, and
Frequency Tables
SURVEYS
We have 30 students in 1st period class.
• 15 students like chocolate ice cream.
• 10 students like vanilla ice cream.
• 5 students like strawberry ice cream.
We have 25 students in 2nd period class.
• 10 students like chocolate ice cream.
• 11 students like vanilla ice cream.
• 4 students like strawberry ice cream.
After you have gathered your
information you can start
making your graph.
You must follow the five steps
to making a graph.
Step 1 to graphing.
• Draw a subject and
scale axis.
• Axis are the
horizontal and
vertical lines that
start the graph.
Step 2 to graphing.
• Label the subject
axis.
• The subject axis is
the axis that
contains the subject
of the survey.
Types of Ice Cream
Step 3 to graphing.
15
Number of students
• Choose a scale and
label the axis.
• The scale axis is the
axis with the number
scale on it.
• The scale should have
reasonable numbers.
Example 2, 5, 10.
Depending on how big
the numbers are on the
scale.
10
5
0
Types of Ice Cream
• Label, draw and
shade the bars.
• Abbreviations are
letters used to
shorten a word.
Number of students
Step 4 to graphing.
15
10
1st
period
5
2nd
period
0
VA CH ST
Types of Ice Cream
Step 5 to graphing.
Ice Cream Preferences
15
Number of students
• Make a key.
• Title your graph.
• Make sure the
colors in the key
match the colors in
the graph.
10
1st
period
5
2nd
period
0
VA
CH
ST
Types of Ice Cream
Types of Graphs.
Bar Graph
15
10
1st
period
5
0
VA CH ST
Double Bar Graph
15
10
1st
period
5
2nd
period
0
VA CH ST
Line Graph
Double Line Graph
Circle Graph
(Pie Chart)
Strawberry
Chocolate
Vanilla
Pictograph
= 1 cone