Graphing

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Graphing

• If a picture is worth a thousand words,

a graph is worth a thousand pictures.
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Pie Charts
In a pie chart, the pie represents the
whole. The pie is divided into different parts
based on a characteristic. They usually represent
percentages of the whole.
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Bar Graphs
A bar graph is useful for comparing information co
llected by counting. The height of each
bar visually shows the value.
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A bar graph can be created sideways or..
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show negative values
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or more than one value..
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or show data in 3 dimensions.
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Line Graphs
Line graphs are used to show trends or changes
over time.
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Independent Variable
The independent variable is the factor that the
scientist changes or adjusts. It is displayed on
the x axis. Often it is time.
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Dependent Variable
The dependent variable is the factor that changes
because of the changes in the independent
variable. It is shown on the y axis.
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More than one line can be placed on the same
graph for comparison.
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Pictographs
A pictograph is basically a bar graph that uses
eye catching symbols.
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