Lean Six-sigma Certification
purpose of lean - answer create value for customer by minimizing waste
purpose of six-sigma - answer reducing defects by conducting root cause analysis
product of lean - answer faster, more efficient and economical, satisfactory quality
six-sigma's room for defect (DPMO) - answer3.4 defects per million opportunities
(DPMO)
origin of lean six-sigma - answer lean came from ford but perfected by Toyota. six-
sigma came from Motorola
phases included in yellow belt exam - answer define, measure, control
4 crucial benefits of lean six-sigma for organizations - answer increase revenue,
decrease cost, increase efficiency, develop effective people and teams
which belts are part time and which are full time? - answer yellow and green belts are
part time whereas black belts are full time
what are the 7 elements of waste (waste)? - answer TIM WOOD transportation,
inventory, motion, waiting, overproduction, over processing, extra-processing, defects
4 ways to handle waste (muda) – answer ESSM: eliminate, simplify, streamline,
minimize
DMAIC stands for - answerdefine, measure, analyze, improve, control
modules included in define stage - answerproject charter, voice of customer, SIPOC
modules included in measure stage - answerselect measures, data collection planning,
operational definitions, baseline data
modules included in analyze stage - answerprocess analysis, brainstorm root causes,
pareto charts, develop hypothesis
modules included in improve stage - answercreate flow, mistake proofing, visual
management and 5s
, modules included in control stage - answerprocess monitoring and response plan,
documentation and story board
deliverables in define phase - answerfully prepared team is formed and committed to
work, customers identified and critical to quality characteristics (CTQs) defined, team
charter developed, business process mapped.
deliverables in measure phase - answerKey measures identified, data collection
planned and executed, process variation displayed and communicated, performance
baselined, sigma level (variance) calculated.
deliverables in control phase - answerDocumented and implemented monitoring plan,
standardized process, documented procedures, response plan established and
deployed, transfer of ownership (project closure).
The Problem Solving Strategy Y = f(x) - answerillustrates the idea that the important
process outcomes Ys are a result of the drivers x's within processes
what is a project charter? - answercontract between organizations leadership and
project team that outlines the problem/objectives, emphasizes senior management
expectations, and establishes timeline and team member roles
business case - answera document that uses the problem and the goal statements and
converts it into a statement of business value
a good problem statement should address these issues - answerwhat, when, where,
magnitude, impact
a good goal statement should address these issues - answerwhen, what, how,
relevance
types of project metrics - answeroperational (turnaround time, production time, number
of defects) and financial (profitability ratios, sales figures)
primary vs secondary metrics - answerprimary metrics are usually the most important
critical to quality characteristic that measures what is desired, and secondary metrics
are required to measure what is not desired or errors
what is CTQ? - answercritical to Quality factor is the quality of a product or service that
is derived from the voice of the customer. A good CTQ should be measurable and
include operational definitions and specific performance standards.
cost of poor quality (COPQ) - answerquantifies the negative outcomes (costs) due to
waste, inefficiencies, and defects in a process; does not include detection and
prevention cost.