D.H. Stamatis 
Six Sigma and Beyond [PDF ebook] 
Statistics and Probability, Volume III

Researchers and professionals in all walks of life need to use the many tools offered by the statistical world, but often do not have the necessary experience in both concept and application. No matter what your profession, sooner or later numbers need to be crunched, and often you need to understand how to do it, and why it is important. Quality c