Yellow Belt Chapter 6: Approaching the Problem

Question 1

Problem Functions: y= f(x)

Answer 1

y = the problem

f(x) = the function of some input/ causes

Question 2

The 5 Whys

Answer 2

When you have a problem in a process, sometimes the causes/ factors affecting the problem won’t be known.

Therefore, you need to dive deep into the problem by asking a series of follow-up questions “Whys?”

Question 3

When to use 5 Whys

Answer 3

You use 5 whys when you don’t have appropriate answers for causes to a problem.

Question 4

Conducting a 5 Whys Session

Answer 4

Ask a series of questions from “Why” (superficial) -> “Why” (deep) starting from the problem in the first place.

Question 5

Creating a Problem Statement

Answer 5

A Lean Six Sigma project always starts with a Problem statement usually stated as part of the Project Charter in the Design Phase of DMAIC.

Question 6

Example of a Strong Problem Statement

Answer 6

a STRONG Problem Statement includes:

• where + when the problem was recorded
• a baseline measurement for the problem with concrete stats
• avoids niche words
• where did the problem occur? when? what? how is the problem measured? how much is the problem costing?
  with benefits.