Elementary statistics : a step by step approach / Bluman, Allan G. Statistics 519 MCG 2007 A035 Or. "Important formulas" (1 folded page) inserted. Boston : McGraw-Hill, c2007. c2007. Text xxx, 802, [47] p. : http://www.loc.gov/catdir/toc/ecip0517/2005023521.html http://www.loc.gov/catdir/enhancements/fy0661/2005023521-d.html