Six sigma


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Six sigma

  1. 1. SIX SIGMA
  2. 2.  Six Sigma at many organizations simplymeans a measure of quality that strives fornear perfection. Six Sigma is a disciplined, data-drivenapproach and methodology for eliminatingdefects (driving toward six standard deviationsbetween the mean and the nearestspecification limit) in any process – frommanufacturing to transactional and fromproduct to service.
  3. 3.  Six Sigma is a process improvement set oftools and strategies, originally developed byMotorola in 1986. Six Sigma became well known after JackWelch made it a central focus of his businessstrategy at General Electric in 1995,and todayit is used in different sectors of industry
  4. 4.  Six Sigma seeks to improve the quality of processoutputs by identifying and removing the causes ofdefects (errors)andminimizing variability in manufacturing and business processes. It uses a set of quality management methods,including statistical methods, and creates a specialinfrastructure of people within the organization("Champions","Black Belts", "Green Belts","OrangeBelts", etc...) who are experts in these very complexmethods. Each Six Sigma project carried out within anorganization follows a defined sequence of steps andhas quantified financial targets (cost reduction and/or
  5. 5.  he term Six Sigma originated from terminologyassociated with manufacturing A six sigma process is one in which 99.9999966%of the products manufactured are statisticallyexpected to be free of defects (3.4 defects permillion) Six Sigma originated as a set of practicesdesigned to improvemanufacturing processes and eliminate defects,but its application was subsequently extended toother types of business processes as well
  6. 6. Six Sigma Doctrine Continuous efforts to achieve stable andpredictable process results Manufacturing and business processes havecharacteristics that can be measured,analyzed, improved and controlled. Achieving sustained quality improvementrequires commitment from the entireorganization, particularly from top-levelmanagement.
  7. 7.  A special infrastructure of "Champions","Master Black Belts", "Black Belts", "GreenBelts", etc. to lead and implement the SixSigma approach
  8. 8. Methods DMAIC and DMADV Define the problem, the voice of the customer,and the project goals, specifically. Measure key aspects of the current process andcollect relevant data. Analyze the data to investigate and verify cause-and-effect relationships. Improve or optimize the current process basedupon data analysis Control the future state process to ensure that anydeviations from target are corrected before theyresult in defects.
  9. 9. DMADV Define design goals that are consistent withcustomer demands and the enterprise strategy. Measure and identify CTQs (characteristics thatare Critical To Quality), product capabilities,production process capability, and risks. Analyze to develop and design alternatives,create a high-level design and evaluate designcapability to select the best design. Design details, optimize the design, and plan fordesign verification. This phase may requiresimulations. Verify the design
  10. 10. At Wipro Wipro has one of the most mature Six Sigmaprograms in the industry ensuring that 91% of the projects are completed on schedule,much above the industry average of 55%. Six Sigma provides the tools for continuousimprovement on existing processes
  11. 11.  One sigma gives a precision of 68.27%., twosigma, of 95.45% and three sigma of 99.73%, whereas Six Sigma gives a precisionof 99.9997%.
  12. 12. Six sigma and HR Create excellence in process delivery – Todeliver the day-to-day service consistentlyand focus more on strategic goals, HR mustmake sure that its processes run smoothly withno or minimal problems. Six Sigma is an excellent way of deliveringprocess excellence
  13. 13.  Reduce defects – From queries that aretime consuming to resolve to wrong salariesor inaccurate employee data, all HR processesare prone to producing multiple defects duringdelivery.
  14. 14.  Through lean techniques, combined with SixSigma methodologies and tools, HR can workto reduce resources lost in ineffective,sometimes unnecessary tasks and still deliverthe service within the required standards.