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Frequency tables help you more easily see what occurs most often in a set of data.

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Numbers or quantities arranged in rows and columns

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The horizontal bar chart is used when comparing the mean or percentages of 8 or more different groups. As with the vertical bar chart, the horizontal bar chart should only be used when comparing categories that don’t affect other variables.

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Scatter plots use the x and y axis. They show the relationship between two different sets of data. Each dot represents a single data point. It shows how one variable is affected by the other.

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Bar graphs are used to compare things between different groups or to track changes over time. However, when trying to measure change over time, bar graphs are best when the changes are larger.

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Pie charts are best to use when you are trying to compare parts of a whole or percents. They do not show changes over time.

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Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group.