Treasure Chest of Six Sigma Growth Methods, Tools, and Best Practices: A Desk Reference Book for Innovation and Growth

Y

Y = f (X)

What Question(s) Does the Tool or Technique Answer?

What are the critical parameters in the process?

Y = f(X) helps you to

• Identify and summarize the significant inputs

• Process elements that drive the output

When Best to Use the Tool or Technique

Hypothesize the components of the Y = f (X) equation early in an improvement project, starting with the desired outputs, and then validate the critical variables that impact the output throughout the remainder of the project.

Brief Description

The equation, Y = f (X), reads “Y is a function of X,” where Y is the output or final product of your process, and the Xs describe the critical inputs and the process elements that influence the output. In other words, it defines that the output ...