In descriptive statistics, a box plot (or boxplot) displays the main properties of a dataset through its quartiles. The box spans from the first quartile to the third quartile, with a horizontal line ...

For example, descriptive statistics can be used to calculate the percentage of a population that supports the policies of a particular president. To conduct a survey, the researcher questions a ...

You also can determine frequency values from data that has been collected already. For example, you probably can determine the frequency value of employees ages 25 to 30 by pulling personnel files.