Lean Six Sigma Yellow Belt

First step is to identify a problem. Lean six sigma approach is to utilize Y=f(X), function defines one variable in terms of another. The statement “y is a function of x” (denoted y = y(x)) means that y varies according to whatever value x takes on.

Capture data on the Y metric (if not already available in Define) and also “Potential X’s” that we believe could impact the Y.

Through you process, graphical and statistical analysis identify the “Critical X’s” (or Root Causes) that truly impact the Y.

Identify and test solutions to the Critical X. Rollout out solutions that eliminate the Root Cause.