References/Notes/Attributions:
Source
M. Friendly (2000), Visualizing Categorical Data: http://euclid.psych.yorku.ca/ftp/sas/vcd/catdata/lifeboat.sas
References
L. Mersey (1912), Report on the loss of the "Titanic" (S. S.). Parliamentary command paper 6452.
M. Friendly (2000), Visualizing Categorical Data. SAS Institute, Cary, NC.