Data displays can be used to compare two sets of data in the following ways:
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They quickly illustrate measures of center. - Data displays such as box plots or bar graphs can show the means or medians of the data sets, making it easier to compare their central tendencies.
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They show trends in data that can be compared. - Line graphs or scatter plots can visualize trends over time or across different categories, allowing for a comparison of the two data sets.
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They display measures of variability for each data set. - Box plots and other visualizations can illustrate the range, interquartile range, or standard deviation, helping to compare how spread out the data points are in each set.
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They easily show the mean of each data set. - Bar graphs or dot plots can clearly indicate the mean of each data set side by side for easy comparison.
The statement "They identify all the data points in each data set." is less about comparison and more about detail, so while it can be useful for understanding the data, it is not directly focusing on the comparison of two data sets.
In summary, the relevant ways to compare two sets of data are the first four options.