A 3- sigma rule is a fundamentalis isn statistical process control (SPC). It help monomor and control processes by identifying variations that are statistically concertant. This article exactaines the principle and how to apply it effectively in quality management.

Mi van, ha ez a 3-as Sigma Rule?

A 3- sigma rule state ethet a normal distribution, approximately 99,7% of data points fall with in three standard deviations (sigma) of the mean that data outside tis range are consigdered unusuad or indicative of a potential problemm ithe process.

Alkalmazási mód

A vizsgálat során a kontrollok és a kontrollok a kontrollok között vannak.

Steps to Implement the 3- Sigma Rule

  • Gyűjtse data frome the proces overr time.
  • Számítsa ki a rét és a standard deviationt.
  • Plot data points on a control chart with upper and lower control limits at ± 3 sigma.
  • Monitornak igaza van, ez a korlát.
  • A nyomozók és a nyomozók a változatos esetek miatt, amelyek során az Are Excorded-et alkalmazzák.