Algebra/Other Types of Graphs

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The same data plotted using a pie chart and a bar chart.

[edit] Pie Chart

Pie charts are best used to compare parts to the whole by percentages. By measuring the number of degrees that a piece of the pie chart is, one can find the percentage it represents.

which simplifies to degrees * 18 / 5

[edit] Bar Chart

Bar charts are best for plotting the change in something over a period of time. It is nearly the same as a line chart, except that the points are not connected, and instead extend to the bottom of the chart.