there two methodology for SIX sigma to improve your process:1. DMAIC
a. D refers to define
b. M refer to measure
c. A refer to Analyze
d. I refer to improve
e. C refer to control the changes or variables
and this methodology is applied for exist processes2. DMADV
a. D refers to define
b. M refer to measure
c. A refer to Analyze
d. D refer to design
e. V refer to verify
and this methodology is used when you want to design new process.
DMAIC for process methodology ( define, measure , analyze , improve , control )
DMADV for design methondology ( define, measure , analyze , design, verify )
and some quality specialists added recognize at the beginning of both