Graphs
Grades on Graphing Tests
100
80
60
Barnhart
Class A Kids
Percentage
40
Other
Class Kids
B
20
0
1st Qtr
2nd Qtr 3rd Qtr
Quarters
4th Qtr
Box - and Whisker Plot
Circle Graph
Pictograph
Types of Graphs
Bar Graphs
Line Graphs
Single
Double
Plots
Histogram
Stem & Leaf
Single
Line
Scatter
Double
Pictograph
Fireflies
More Info
Bar Graph
Number of Students
Favorite Subjects
70
60
50
40
30
20
10
0
Math
Science
Reading
Social Studies
Subjects
More Info
Double Bar Graph
Plant Growth
20
Inches
15
Light
Dark
10
5
0
Week 1
Week 3
Week 2
Week 4
Weeks
More Info
Histogram
Class Test Scores
10
9
Frequency
8
7
6
5
4
3
2
1
10-Jan
11-20
21-30
31-40
41-50
51-60
Test Scores
61-70
71-80
81-90
90-99
More Info
Line Graph
Degrees Farenheit
Temperature For One Week
100
90
80
70
60
50
40
30
20
10
0
Day 1
Day 2
Day 3
Day 4
Day 5
Days of the Week
More Info
Double Line Graph
Amount of Rainfall
5
Inches
4
3
1999
2
2000
1
0
May
July
June
August
Months
More Info
Circle Graph
Eye Color
8%
20%
40%
Brown
Blue
Green
Other
32%
More Info
Line Plot
Favorite Colors
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Red
Blue
Green
Yellow
Purple
X
More Info
Stem and Leaf Plot
Student Heights in Centimeters
7889
12 7,8,8,9
1244466
13 1,2,4,4,4,6,6
0023347
14 0,0,2,3,3,4,7
11
15 1,1
Key: 12 7 = 127 cm
More Info
Scatter Plot
Study Time Versus Grades
100
80
Grade 60
40
20
0
*
0
**
* *
1
2
3
Study Time in Hours
**
4
5
More Info
Box - and - Whisker Plot
Hours of Homework
5.25
6.3 6.9
7.75
5
3
4
5
6
7
8
9
More Info
Return to Graph
Bar Graph
b
b
b
The purpose of a bar
graph is to display and
compare data.
Bar graphs use bars to
show the data.
A bar graph must
include:
- a title
- labeled X and Y axes
- equal intervals are
used on the Y axis
- the bars are evenly
spaced apart from
each other
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Stem and Leaf Plot
Stem and leaf plots are used as a quick way
of seeing how many pieces of data fall in
various ranges. The reader can quickly tell:
- the range
- the mode
Stem and leaf plots have a title, a stem, and
leaves
A key is used to explain how to read the
stem and leaves.
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Pictograph
All pictographs have a
title.
Use pictures to show
the data.
Rows and columns
shape the pictograph.
Each picture equals a
certain amount of
data.
Label each row and
column.
Pictographs need a
key.
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Line Graph
A line graph is used to
illustrate change over
time.
Line graphs need:
- Title
- Labeled X and Y axes
- Equal Intervals
- Data displayed by
points connected into
lines
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Double Line Graph
A double line graph is
used to compare two
groups of related data
over time.
Double line graphs
need:
- Title
- Labeled X and Y axes
- Equal Intervals
- Data displayed by
points connected into
lines
- Key
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Circle Graph
Circle graphs are
used to display parts
of the data in relation
to the entire amount
of data.
All circle graphs need
a title.
Each part is called a
sector and is labeled.
All angles correct
(+2/-2 degrees)
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Double Bar Graph
The purpose of a
double bar graph is to
compare two or more
sets of data.
Uses bars to show the
data.
Double bar graphs
must include:
- Title
- Labeled X and Y axes
- Equal intervals are
used on the Y axis
- Pairs of bars are
equally spaced, but
the compared bars
are not
- Key
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Line Plot
A line plot shows the spread of all the data
on a number line.
Easily identifies the mode.
All line plots include:
- a title
- a numbered horizontal line
- data displayed by use of X’s
Histogram
Histograms are used
to show the frequency
of data.
Very similar to bar
graphs, but use
intervals on the X axis.
Bars do touch.
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Histograms have a
title.
Histograms have two
axes which are
labeled.
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Box - and - Whisker Plot
Displays large set of
data.
Gives general idea of
how data clusters.
Graph includes:
- Title
- Labeled intervals
- Box between lower
and upper quartiles
- Whiskers from
quartiles to extremes
- Median, quartiles and
whiskers labeled
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Scatter Plot
Shows how closely
two sets of data are
related
The closer the sets
are related, the closer
the points come to
forming a straight
line.
Scatter Plots include:
- title
- labeled axes
- equal intervals
- corresponding
numbers plotted as
ordered pairs