A
Bar Chart has innumerable uses but is most commonly used to track the numeric
value of various items in order to compare each value. For instance, they can
show the temperature of different areas, the money brought in during different
months by a certain product, the number of years various companies have
existed, and more.
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It is best used when comparing the values
of different items in one specific category. It is an excellent tool in
comparing and analyzing differences between things. At least one axis usually
includes numerical values.
Best Practices:
Determine the purpose: Decide what the Bar
Chart will be showing. Place a descriptive title at the top of the chart.
Create a graph: Create a graph with an x-
and y-axis by drawing a horizontal line intersecting a vertical line (the
bottom of the vertical line should intersect with the left end of the
horizontal line).
Label each axis: With most Bar Charts, the
names of what each of the bars are representing are distributed evenly along
the horizontal x-axis. Along the vertical y-axis the numeric system being used
should be labeled and divided evenly into applicable increments. Some Bar
charts are created in the opposite fashion, with bars extending from the y-axis
horizontally, but this is less common.
Create bars: Create a bar for each of the categories
or sections you already created and allow it to extend up to whatever value on
the y axis it holds. Do the same for each section. The exact value of the bar
may be placed slightly above it since it may be difficult to read the exact
value based solely upon the bar's height.
Create a key: If the information being
displayed is complicated or simply needs added clarification each bar may be
colored differently in order to distinguish between them, using a key to inform
the viewer what each color represents.
Verify accuracy and share: Consult with
others to be sure the Bar Chart is accurate. The Bar Chart can be shown to
others in order to make a point or share information with them.
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