Aczel's COMPLETE BUSINESS STATISTICS,4/E is designed and written for both the undergraduate and graduate level business statistics courses. Aczel's quality of presentation and the richness and its abundant problem sets are famous. The text covers an array of topics and uses real data sets drawn from a variety of domestic and international sources. The problems and examples found in this text are exceptionally realistic,stimulating,challenging and useful. Dr. Aczel is a world-renowned expert. Besides Complete Business Statistics he is the author of Concepts and Applications,as well as two trade How to Beat the IRS at its Own Game and Fermat's Last Unlocking the Secret of an Ancient Mathematical Problem. Dr. Aczel is also an active consultant in marketing research and financial services.