How To Draw Scientific Graphs Correctly in Physics Practical Assessments
Posted on November 10, 2012 by DJ Kim
What are scientific graphs?
 A graph is a visual representation of a relationship between two variables, x (independent variable) and y (dependent variable).
 The graphs make it easy to identify trends in data that we have collected.
 An example of a correctly drawn graph is shown below:
How to Draw a Scientific Graph
Step  Action  Detail 
1  Identify the variables 

2  Determine the variable range 

3  Determine the scale of the graph 

4  Number and label each axis 

5  Plot the data points 

6  Draw the graph 

7  Provide a descriptive title 

Common mistakes
 Graph 1 shown below is missing labels.
Mistakes in this graph include:
 Missing labels for the axes.
 Missing descriptive title.
 Extrapolated line is not drawn using a dotted line.
6 Common Mistakes HSC Physics Students Make in Exams
Graph 2 shown below contains inappropriate use of scale.
Mistakes in this graph include:
 Incorrect scale.
 Inappropriate use of the scale in x and yaxes. Each box should represent the same value across each axes. For example, if each box is set a value of 0.05 at the beginning of the graph, then one box should always represent 0.05 throughout the axes.
 The student should either start the scale at 0 or at 0.20.
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