Last week’s post, “A Histogram is NOT a Bar Chart ”, explained that bar charts were used for comparing categorical variables and that histograms were used to show the distributions of binned ...

A box plot is a schematic representation of a distribution. The vertical lines in the box mark the 25th, 50th, and 75th percentiles of the data. The pth percentile of a distribution is the value such ...

When data is presented as a list of numbers, it can be difficult to interpret. If it is summarised in a diagram it is easier to draw conclusions and to compare with a different data set. A box plot is ...

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 ...