Box-and-Whisker Plots
http://regentsprep.org/Regents/math/data/boxwhisk.htm
http://www.purplemath.com/modules/boxwhisk2.htm
http://www.shs.issaquah.wednet.edu/teachers/descriptivesta/toppage3.htm
http://www.ccps.org/math/high/Alg1AParent%20help/Box%20and%20Whisker%20Plots.pdf
http://sharepoint.snoqualmie.k12.wa.us/ckms/treismanj/Lists/PREALGEBRA/DispForm.aspx?ID=28
http://mathforum.org/library/drmath/view/52792.html
http://www.glencoe.com/sec/math/prealg/prealg03/other_calculator_keystrokes/pdfs/prealg03_sharp9900_pg622.pdf
http://southsidejh.lpsb.org/boxnwhisker/index.html