Graphing Skills
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1
Line Graph
A line graph is a graph
used to show _______ e!!
What can time be measured in???
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______ - ______ - Hours – _____ Weeks -____ – Years - ____ - Centuries etc.
2
When to use a line graph?
Would we use a line graph
in the following situations:
•To show how many people like pizza in this
class? ____
•To show how much it rained each month this
year?
____________________
•To show how many people live in Meridian,
Idaho?
____
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3
Birthdays?
Would we use a line graph to show
when our birthdays are?
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■
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Our birthday does deal with time
doesn’t it? (months/years)
But, our birthday is ______,
meaning it _____________.
A line graph shows __________, so
we would not use it for this type of
graph.
4
Title: _____________________
_____
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12
Labeling
11
10
9
8
___
7
6
_______
5
4
2
1
1
2
3
5
6
_______
7
_____
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5
How do we make a line
graph?
A line graph ALWAYS ________!
■ A line graph has
______________
■ An axis is either _____________
_______ (called x) or _________
_______ (called y); they form the
base lines of a graph.
■
Y
X
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6
X-axis and Y-axis
When you are making a line graph, the
x-axis ____________, and the y-axis
______________.
The x and y-axis usually starts with ___
on a line graph
It is important to make sure that the
_______ on the axes are ___________.
What do I mean by this?
■
■
■
■
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7
Intervals
■
■
When we are setting up a line graph, we
need to decide what intervals we want to
use.
If we are graphing the temperature for a
year, do we want to put 365 labels on the
x-axis?
■ No.The x-axis would have to be
very long to be able to see all
those numbers. A reasonable
interval may be 20 days.
■
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Remember - not every gridline on a
graph needs a label.
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Trends
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■
■
When the data line is sloping up, we say it is
________________.
When the data line is sloping down, we say
it is ________________.
When the data
line is a
horizontal flat
line, that means
that there was
__ change
during a specific
time period.
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9
Plotting a Line graph
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■
■
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When we are plotting a line graph, it is
important to read what information is on
____ ____.
There must be a label on each axis that
describes the information.
Much like a bar graph, we look at the x-axis
_____in order to plot our points.
Time in minutes
10
What is a Bar Graph?
Used to compare the amounts or frequency of
data.
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11
Title: _____________________
Y Axis
13
Data
12
Labeling
11
10
9
8
7
6
Intervals
5
4
2
1
1
2
3
5
Labeling
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7
X Axis
12
Graph the following information. Which type of graph will you use?
Be sure to have a title, proper labeling, accurate data, and appropriate
intervals.
Time (Days)
Plant Height (cm)
0
1.43
7
2.16
14
2.67
21
3.25
28
4.04
35
4.67
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13
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14
Graph the following information. Which type of graph will you use?
Be sure to have a title, proper labeling, accurate data, and appropriate
intervals.
Student Name
Shoe Size
Scott
10.5
Audrey
6
Levi
14
Lindsey
8
Butch
9
Alexis
5.5
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15
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