Pie Charts Essay

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Pie Charts
An important part of decision making is having a clear understanding of the information used to base decisions from. Charts can be valuable when a need to represent numerical data would benefit communicating information visually. Some of the most important aspects of a good chart are to select the right type of chart (or graph) that can best characterize the data, also, to keep the design simple in order for an audience to easily understand the information.
One of the most popular types of charts is the pie chart. The pie chart is used to visually represent the proportional value of individual parts to the whole. As the name describes, this is done by representing the numerical equivalence of each part as a piece of the whole
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(para. 7) For clarity a complete title of the data being represented is used, along with each slice clearly labeled to identify its characteristics, and the source of the data. Appropriate colors and or shading are also quite valuable in distinguishing the segments. Test the chart in its final format for readability. Whether it be displayed on a projector, paper or computer screen. With the assistance of a coworker, ensure that the audience will be able to clearly interpret the graph, making sure the chart is large and clear enough to read.
Based on what you have learned, what can you point out about the following chart that does not follow best practices?

Source: Where is earth’s water located? (2003)
·     2 pie charts were used in the single representation, this could be acceptable if the reader was given free time to study the chart, but the complexity of using one pie chart to further divide a portion of the other pie chart would be too confusing for many situations. Ideally it would be presented separately. Remember to keep it simple.
·     Adding to the confusion is that the same color was used on the 2 different charts, but represent 2 different things.
·     You may have noticed that the chart does not give the actual stats for the “Water usable by

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