Courses » Six Sigma

Six Sigma


The course on Six Sigma will focus on detailed strategic and operational issues of process improvement and variation reduction called Six Sigma, a measure of quality that strives for near perfection. It is a disciplined, data-driven approach for eliminating defects (driving towards six standard deviations between the mean and the nearest specification limit) in any process-from manufacturing to transactional and from product to service. A Six Sigma defect is anything outside of customer specifications. To be tagged Six Sigma, a process must not produce more than 3.4 defects per million opportunities.

The course will provide an exposure to well-established methods of quality assurance and management and advanced statistical methods including design of experiments.

Six Sigma is recognized as modern quality strategy to compete and sustain in the global markets. The philosophy of Six Sigma is built on two frameworks-DMAIC (define, measure, analyze, improve, control) and DMADV (define, measure, analyze, design, verify). This course will provide a detailed understanding on both the methodologies to the students.

The course intends to cover basic concepts in quality management, TQM, Cost of quality, quality engineering and Six Sigma, review of Probability and Statistics, Test of Hypothesis.

Subsequently, the course will focus on DMAIC process for process and design improvement, Acceptance Sampling, SPC (Statistical Process Control), Process Capability, Gage Reproducibility and Repeatability, Quality Function Deployment.

This will be followed by advanced quality control tools like Design of Experiments, ANOVA, EVOP, Fractional, Full and Orthogonal Experiments, Regression model building, Taguchi methods for robust design, and Six Sigma sustainability.

The course is designed with a practical orientation and includes cases and industry applications of the concepts.


Engineering and Math courses in undergraduate (B Tech) program


Manufacturing and Service Industry.

3042 students has enrolled already!!


Tapan P Bagchi holds a B Tech in Mechanical Engineering from IIT Kanpur, India and MASc and Ph D in Industrial Engineering from the University of Toronto, Canada. He also holds a D Sc in Quality Engineering from IIT Kharagpur, India. He is a Fellow of Institution of Engineers (India) and a Registered Professional Engineer in Ontario, Canada. Author of over 100 papers and six texts on quality engineering, computer science, genetic algorithms, scheduling, ISO 9000 and database management, he has held the positions of Professor and Chair in the IIT System, Dean at SPJIMR Dubai, Director at NITIE, NDS Infoserv Mumbai, and NMIMS University’s Shirpur Campus. Prior returning to academics, Bagchi served the EXXON Corporation holding techno-managerial positions for over sixteen years in Canada, US, Singapore and Europe.


Jitesh J Thakkar is an Associate Professor at the Department of Industrial and Systems Engineering, Indian Institute of Technology (IIT) Kharagpur, India.

He received Ph.D in Supply Chain Management from IIT Delhi, Masters in Technology in Industrial Engineering from IIT Delhi and Bachelors in Mechanical Engineering with Gold Medal from the oldest Government Engineering College Birla Vishvakarma Mahavidyalaya, Sardar Patel University, Gujarat.

He has published research in the areas of Lean & Sustainable manufacturing, Supply Chain Management, Quality Management, Small and Medium Enterprises and Performance Measurement. The publications have appeared in the leading journals – Journal of Cleaner Production, Production Planning and Control, Computers & Industrial Engineering, International Journal of Advanced Manufacturing Technology, Journal of Manufacturing Technology Management, and International Journal of Productivity and Performance Measurement.

He is an Editorial Board member and Guest Editor for International Journal of Lean Six Sigma, Emerald. He is a Guest Editor for Electronics Commerce Research and Applications, Elsevier. He extends his services as a reviewer to the reputed international journals like International Journal of Production Economics, International Journal of Production Research, Production Planning and Control, and International Journal of Productivity and Performance Management.

He has trained Corporate Managers in Lean Manufacturing, Process Excellence, Six Sigma, Value Engineering, Project Management, Quality Management, Supply Chain Management and Statistical Decision Making.  He has also trained Teachers in Research & Publication and Teaching & Learning.

The Six Sigma course was developed by Prof. Tapan P Bagchi and has been repurposed for MOOC by Prof. Jitesh J Thakkar.


Week 1:  Quality concepts and definition
Key concepts in quality management
Fundamentals of Total Quality Management (TQM)
Cost of quality and Six Sigma

Week 2: 
 Fundamentals of statistics
Probability theory and concepts
Probability rules and events
Sampling distribution and test of hypothesis

Week 3: 
Quality philosophies and standards
Tools for TQM and continuous improvement
Quality Function Deployment (QFD) and Design failure mode effects analysis  (DFMEA)
Quality awards, benchmarking and service quality

Week 4: 
Service quality and process control 
Project management: Complexities and examples
Project management: Key decisions, Work breakdown structure, schedule development and cost estimation
Project planning and scheduling: Network, critical path method, PERT, crashing

Week 5: 
Measurement accuracy and process variations
Acceptance sampling
Operating characteristic curve

Week 6: 
Design of sampling plan
Basics of Statistical Process Control
Statistical Process Control for services

Week 7: 
Control charts for variables and attributes
Process capability: Fundamentals and measures
Quality Function Deployment (QFD) and Kano Model

Week 8: Design of experiment (DOE)
Experimental analysis in product realization
Experimental setups and strategies

Week 9: 
Factorial experiment, ANOVA and Response surface
Benchmarking: Customer-service and Product-service performance
Benchmarks and performance measurement: Critical success factors and case study

Week 10:
 Supply Chain Management, TQM and quality chain
Taguchi Product Design Approach
Taguchi’s Robust Design

Week 11: 
DMAIC, Zero defect and Six Sigma
Six Sigma: Case study and Tools
Design for Manufacturing (DFM),  Design for Assemble (DFA) and Reliability Analysis

Week 12:  Failure Mode and Effect Analysis (FMEA)
Six Sigma: Strategic planning and Implementation
Six Sigma and Operational Excellence: Summary


      1.   Forrest W. Breyfogle III, Implementing Six Sigma, John Wiley & Sons, INC., 2nd edition.
2.  Howard S. Gitlow and David M. Levine, Six Sigma for Green Belts and Champions, Pearson Education, Inc., 10th
     Printing, September 2012.
3.  Evans, J R and W M Lindsay, An Introduction to Six Sigma and Process Improvement, CENGAGE Learning, 3rd
     Indian reprint. 
4.  Montgomery, D C. Design and Analysis of Experiments, 5th edition, Wiley.
5.  Mitra, Amitava. Fundamentals of Quality Control and Improvement, 3rd edition, Wiley India Pvt Ltd.

  • The exam is optional for a fee.
  • Date and Time of Exams: April 28 (Saturday) and April 29 (Sunday) :  Afternoon session: 2pm to 5pm
  • Exam for this course will be available in one session on both 28 and 29 April. 
  • Registration url: Announcements will be made when the registration form is open for registrations.
  • The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published.

  • Final score will be calculated as : 25% assignment score + 75% final exam score.
  • 25% assignment score is calculated as 25% of average of  best 8 out of 12 assignments.
  • E-Certificate will be given to those who register and write the exam and score greater than or equal to 40% final score. Certificate will have your name, photograph and the score in the final exam with the breakup. It will have the logos of NPTEL and IIT KHARAGPUR. It will be e-verifiable at nptel.ac.in/noc.