The following statements use the flight delay data of Example 18.1 to illustrate how to create side-by-side box-and-whisker plots with notches: title 'Analysis of Airline Departure Delays'; title2 ...

Use box plots to illustrate the spread and differences of samples.

Next, summarize the results using the MEANS procedure and present them in a box plot using the SHEWHART procedure. The box plot facilitates the detection of outliers. You can conclude from this ...