# N Notes on graphing

```Data Tables
Average Daily Temperature for January 1-5
in Degrees Fahrenheit
Date
Temperature (&deg;F)
1
10
2
25
3
30
4
42
5
23
 A data table has three titles.
 Independent variable (IV) is
on the left side of the data
table.
 Dependent variable (DV) is on
the right side of the data
table.
 Data arranged in rows and
columns.
Graphing
All graphs start here!
Draw and label both
y
axes.
0
x
Variables
y
 x- axis : Independent
variable

MIX
DV
Title
0
IV Title
 y- axis : Dependent
x variable
 DRY
All graphs have
THREE TITLES!
Titles
3 labels per graph:
- Main title that
describes the graph
- x-axis
- y-axis
The titles come from
the data table.
Investigation 5
Cars in the Teachers’ Parking Lot
y
 Make a title for your
graph.
Number
of Each
0
Type of Car
x
Bar or Line?????
Bar Graphs
used for descriptive
or grouping
information
(compares data)
Examples:Type of ---,
color, weight, height,
shape, amount, etc.
Bar or Line?????
Line Graphs
Used when you collect information
over time
Examples: hours, days, months,
minutes, weeks, temperature, etc.
Range
From lowest to
highest.
Bar - y axis
Number the y-axis
only!
Use an increment
How you count and
label each axis.
Increments must
include the range of
information.
Cars in the Teachers’ Parking Lot
16
14
12
10
8
6
4
2
0
Bar - x axis
Write the groups
(words) from the left
side of the data table
Cars in the Teachers’ Parking Lot
16
14
12
10
8
6
4
2
0
Chevy
Dodge
Ford
Honda
Mazda
Toyota Volvo
Bar Graph
Draw the bars.
Cars in the Teachers’ Parking Lot
16
14
12
10
8
6
4
2
0
Chevy
Dodge
Ford
Honda
Mazda
Toyota Volvo
Increments
The numbers on the axis.
- Line graph: x and y axis=range
Equal to multiples large enough to include
highest number. (ex: 5, 10, 15, 20 or 100, 200,
300, 400 or 1, 2, 3, 4……)
Line - y axis
Number the y-axis!
Use an increment
small enough to cover
entire graphing space
but large enough to
include highest
number.
100
80
60
40
20
0
Scores on a Science Test
Line- x axis
Number the x-axis!
Use an increment
small enough to cover
entire graphing space
but large enough to
include highest
number.
Scores on a Science Test
100
80
60
40
20
0
0
1
2
3
4
5
6
Ordered Pairs
Two numbers that
join together to make
a point on a graph.
( x, y)
(2, 3)
Scores on a Science Test
100
80
60
40
20
0
0
1
2
3
4
5
6
Connect the dots in order!
Scores on a Science Test
100
80
60
40
20
0
0
1
2
3
4
5
6
Summary
Draw and label x &amp; y axes
(Don't forget zero.)
Write the IV and DV titles
from the data table.
Write the main title used
in the data table.
Decide
BAR
LINE
Number the Y axis only!
Number the x &amp; y axes.
Write the groups on the
X axis.
Plot the ordered pairs.
Draw the bars.
Connect the dots in the
order you drew them.
```