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BOXCHART Statement |
See SHWBOX4 in the SAS/QC Sample Library |
The following statements use the flight delay data of
Example 32.1 to illustrate how to create side-by-side
box-and-whisker plots with notches:
title 'Analysis of Airline Departure Delays'; symbol v=plus c=bib; proc shewhart data=times limits=timelim ; boxchart delay * day / boxstyle = schematicid cboxfill = ywh stddeviations nohlabel nolegend nolimits notches llimits = 20 cboxes = dagr cframe = vligb idcolor = salmon; id reason; label delay = 'Delay in Minutes'; run;
The control limits are suppressed with the NOLIMITS option. The notches, requested with the NOTCHES option, measure the significance of the difference between two medians. The medians are significantly different at approximately the 95% level if the notches do not overlap. For details, see the entry for the NOTCHES option in Chapter 46, "Dictionary of Options."
Output 32.3.1: Notched Side-by-Side Box-and-Whisker Plots
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