Sigma Six

What is sigma six?

Methodology to constantly improve processes within organisations

The UK Department for Trade and Industry says Six Sigma is:

“A data-driven method for achieving near perfect quality. Six Sigma analysis can focus on any element of production or service, and has a strong emphasis on statistical analysis in design, manufacturing and customer-oriented activities." June 2005.

It is a statistical representation describing quantitatively how a process is performing

DMAIC Model

Define opportunity

Measure performance

Analyse opportunity

Improve performance

Control performance

Sigma six scale -DPMO

Defects per million opportunities.

You keep repeating the DMAIC process to try and achieve a sigma level 6.

Most businesses run at level 2/3 which is considered by the scale as an unsustainable level of satisfaction