Page 19 - Six Sigma Yellow Belt

Exercise σ? Airline

Roughly 16,425,000 flights

per year Sigma Level DPMO # Defects
In 2021, there were 21

airline accidents reported 1σ 691,492 11,349,675

Complete 3, 4, 5, 6 sigma

For: # of Defects 2σ 308,538 5,075,325

3σ

# of Defects 4σ
= 16,425,000 * (100%-30.9%)

= 16,425,000 * 69.1% 5σ

= 11,349,675
= 11,349,674 / 1,000,000 6σ

= 691,492