Box Plot . A box plot is a schematic representation of a distribution. The vertical lines in the box mark the 25th, ... When you click on them, the observations are selected in the box plot, the ...

Box plots, also called box and whisker plots, are more useful than histograms for comparing distributions. They show more information about the data than do bar charts of a summary statistic such ...

Use box plots to illustrate the spread and differences of samples. ... Whereas histograms require a sample size of at least 30 to be useful, box plots require a sample size of only 5, ...

Examining Distributions. In Chapter 4, "Exploring Data in One Dimension," you examined distributions using bar charts and box plots. In this chapter, you examine the distribution of an interval ...