Siegel, Andrew F. <br/><br/>
Practical business statistics / 
Andrew F. Siegel. 
 - 4th ed. 
 - Boston :  Irwin McGraw-Hill,  c2000. 
 - xxiv, 792 p. :  ill. (some col.) ;  26 cm.  +  1 computer laser optical disc (4 3/4 in.) 
 - Irwin/McGraw-Hill series, operations and decision sciences .