Understanding the Root Cause of a Problem 

The "5 Whys" in Lean Six Sigma

Why is it Important?

The "5 Whys" provide skills you need in one toolkit to help determine where problems come from & why they arise.

Step  1

Step  2

Step  3

Step  4

Write down the problem

Why is the problem occurring?

If no idea, ask why that is.

Return to step 3 until you agree to RCA of the problem.

How it works?

Want to go through some examples?