Statistics for business and economics 
Newbold, Paul. 
 - Fifth Edition. 
 -  Pearson Education, Inc.  2003 
 - xx, 857 pages. 
0-205-06753-0
Commercial statistics.
GS 519.5 N42s 2003
                        0-205-06753-0
Commercial statistics.
GS 519.5 N42s 2003