PPT
Quality improvement. What is 6 sigma?. Level of 6 sigma: 3.4 DPMO (Defects Per Million Opportunities) Indexes concerned: FTY (First Time Yield) RTY(Rolled Throughput Yield) RTY=FTY 1 FTY 2 FTY n. RTY. 1. 2. 4. 3. 5. 10. 7. 9. 6. 8. 90%. 99% x. 99% x. 99% x. 99% x.