Rajesh Tyagi and Praveen Gupta
Rajesh Kumar Tyagi is assistant professor, operations management at DePaul and a member of the Research Roundtable for Service Performance. He co-authored Six Sigma for Transactions and contributed to Six Sigma Performance Handbook.
Praveen Gupta, an ASQ Fellow, has 25+ years experience in process, product, and corporate performance improvement. A Quality Digest columnist, he wrote the best-seller Six Sigma Business Scorecard.