[ch09biblio01entry01] 1. and . Basic Business Statistics: Concepts and Applications, Ninth Edition. Upper Saddle River, NJ: Prentice Hall, <year>2004</year>.
[ch09biblio01entry02] 2. Practical Nonparametric Statistics, Third Edition. New York: Wiley, <year>2000</year>.
[ch09biblio01entry03] 3. Applied Nonparametric Statistics, Second Edition. Boston: Houghton Mifflin, <year>1990</year>.
[ch09biblio01entry04] 4. and . Six Sigma for Green Belts and Champions. Upper Saddle River, NJ: Financial Times - Prentice Hall, <year>2005</year>.
[ch09biblio01entry05] 5. and . Statistics for Managers ...