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1/20/2010
1
TODAY’S TOPICS:
Graphing
Engr 160
Graphing
How will learning this help
me?
• You will learn how to
determine equations
representing test data
– This will enable to you
make predictions of how
one physical parameter
affects another
• You will learn how to
present data accurately
and in a professional
manner
Connecting to your Past
Engr 160
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2
Manual Graphing
1. Select the proper type of graph paper
– Loglog
– Semilog
– Rectangular
2. Choose the proper location of the
horizontal and vertical axes.
3. Determine the scale (range) for each axis
to display the data appropriately
Engr 160
Manual Graphing
4. Graduate and calibrate axes using the
1
25 Rule.
– 125 Rule:
scale graduations are selected
so that the smallest division of the axis is
positive or negative integer power of 10
times 1, 2, or 5.
Engr 160
1/20/2010
3
Engr 160
Manual Graphing
5. Identify each axis completely
– Variable name, symbol, units
6. Plot points and use permissible symbols
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This note was uploaded on 02/09/2012 for the course ENGR 160 taught by Professor Sengupta during the Spring '07 term at Iowa State.
 Spring '07
 Sengupta

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