Six Sigma is a step-by-step process of statistical tools and interventions, with the help of which companies can interpret the business processes requiring attention, find the root cause of problems, and sustain improvement gains. The Six Sigma Yellow Belt is the first step for people/professionals into the world of process improvement. Six Sigma Yellow Belt program is meant for those who wish to gain a basic understanding of Six Sigma and the phases of DMAIC, Define, Measure, Analyze, Measure, Control.