Last week’s post, “A Histogram is NOT a Bar Chart ... Some books and software have redefined the definitions of box plots. For example, they may plot means and variances rather than ...

The following example uses the flight delay data of the preceding example to illustrate how you can create box plots with various styles of box-and-whisker plots. The following statements create a ...

Figure 12.5: Identifying Extreme Observations These are observations 40 and 217. When you click on them, the observations are selected in the box plot, the histogram, and the data window as well.

Box plots are a simple but powerful graphing tool that can be used in place of histograms to address both goals. Whereas histograms require a sample size of at least 30 to be useful, box plots ...