GRAPHING

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GRAPHING
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To interpret the results of an experiment, it is
necessary to be able to evaluate the data.
Making a graph is one way to help make data
visual.
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Types of Graphes
Line Graph - Shows trends or how data changes
over time.
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Bar Graph - Displays information collected by
counting.
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Pie Graph/Circle Graph - Shows how a fixed
quantity is broken down into part.
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A good data table has these
A title
Motion of a Mouse
Units like seconds and meters
Labels like time and distance
Information
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Each part of the data table is used to create a
graph
Title
Motion of a Mouse
X Axis
The X axis (horizontal axis, across) is usually
TIME or the Independent Variable
Y Axis
The Y axis (Vertical axis, up/down) is usually
DISTANCE or the Dependent Variable
Range of values
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Title
Labels with units
Dependent
Data
Range of values
Independent
Labels with units
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In order to make your graph, you need to first
give it a scale. This is how you find the best
scale.

• Subtract the lowest value in your range from the
  highest value
• 21- 1 20

2. Count the number of available lines on your
graph 10
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3. Divide the range by the number of available
lines 20 / 10 2 This is your scale for that axis
2 4 6 8 10 12 14 16 18 20
If we use the same range of values, but our graph
looked like this
4 8 12 16 20
What would be the scale?
20 /5 4
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How to label the axis
Problem Does the height of an individual
influence their wingspan?
Title
Dependent
Wingspan
(units)
Independent
Height
(units)