Lean Six Sigma Black Belt UPDATED
ACTUAL Questions and CORRECT
Answers
PDCA - CORRECT ANSWER✔✔- Plan, Do, Check, Act
The term "Six Sigma" refers to... - CORRECT ANSWER✔✔- The ability of highly capable
processes to produce output within specification. In particular, processes that operate within
six sigma quality produce a defect levels below 3.4 defects per (one) million opportunities
(DPMO).
Six Sigma two key methodologies - CORRECT ANSWER✔✔- DMAIC & DMADV (both
inspired by W. Deming's Plan, Do, Check, Act cycle)
EXISTING PROCESS OR BUSINESS
- DMAIC (Define, Measure, Analyze, Improve, Control)
NEW PRODUCT OR PROCESS
- DMADV (Define, Measure, Analyze, Design, Verify)
Define (DMAIC) - CORRECT ANSWER✔✔- The process improvement GOALS that are
consistent with customer demands & enterprise strategy.
First asks leaders to define core processes. It is important to define the selected project scope,
expectations, resources & timeliness.
Identifies specifically what is part of the project & what is not, & explains the scope of the
project.
Many times the first passes at process documentation are at a general level. Additional work
is often required to adequately understand & correctly document the processes.
, Measure (DMAIC) - CORRECT ANSWER✔✔- The current process & collect relevant data
for future comparison.
Six Sigma approach asks the Black Belt project manager to quantify & benchmark the
process using actual data. at a minimum consider the mean or average dispersion or variation
(maybe, even calculate the standard deviation). Trends & cycles can also be very revealing.
Process capabilities can be calculated once there is performance data.
Analyze (DMAIC) - CORRECT ANSWER✔✔- To verify relationship & causality of
factors. Determine what the relationship is & attempt to ensure that all factors have been
considered.
Once the project is understood & the baseline performance documented & verified that there
is real opportunity, it is time to do the analysis of the process. In this step, apply statistical
tools to validate root causes of problems. Any number of tools & tests can be used.
The objective is to understand the process at a level, sufficient to be able to formulate options
for improvement. We should be able to compare the various options with each other to
determine the most promising alternatives.
Superficial analysis & understanding will lead to unproductive options being selected, forcing
recycle through the process to make improvements. At the other extreme is thorough analysis
of only a few activities.
Improve (DMAIC) - CORRECT ANSWER✔✔- Or "Optimize" the process based upon the
analysis using techniques like "Design of Experiments".
During this phase, ideas & solutions are put to work. The Black Belt has discovered &
validated all known root causes for the existing opportunity. Approach requires Black Belt to
identify solutions. There must be checks to assure that the desired results are being achieved.
Some experiments & trials may be required in order to find the best solution. While doing
this, it is important that all project associates understand that these are trials & really are part
of the six sigma approach.
Control (DMAIC) - CORRECT ANSWER✔✔- To ensure that any variances are corrected
before they result in defects. Set up pilot runs to establish "process capability", transition to
production & thereafter continuously measure the process & institute control mechanisms.
ACTUAL Questions and CORRECT
Answers
PDCA - CORRECT ANSWER✔✔- Plan, Do, Check, Act
The term "Six Sigma" refers to... - CORRECT ANSWER✔✔- The ability of highly capable
processes to produce output within specification. In particular, processes that operate within
six sigma quality produce a defect levels below 3.4 defects per (one) million opportunities
(DPMO).
Six Sigma two key methodologies - CORRECT ANSWER✔✔- DMAIC & DMADV (both
inspired by W. Deming's Plan, Do, Check, Act cycle)
EXISTING PROCESS OR BUSINESS
- DMAIC (Define, Measure, Analyze, Improve, Control)
NEW PRODUCT OR PROCESS
- DMADV (Define, Measure, Analyze, Design, Verify)
Define (DMAIC) - CORRECT ANSWER✔✔- The process improvement GOALS that are
consistent with customer demands & enterprise strategy.
First asks leaders to define core processes. It is important to define the selected project scope,
expectations, resources & timeliness.
Identifies specifically what is part of the project & what is not, & explains the scope of the
project.
Many times the first passes at process documentation are at a general level. Additional work
is often required to adequately understand & correctly document the processes.
, Measure (DMAIC) - CORRECT ANSWER✔✔- The current process & collect relevant data
for future comparison.
Six Sigma approach asks the Black Belt project manager to quantify & benchmark the
process using actual data. at a minimum consider the mean or average dispersion or variation
(maybe, even calculate the standard deviation). Trends & cycles can also be very revealing.
Process capabilities can be calculated once there is performance data.
Analyze (DMAIC) - CORRECT ANSWER✔✔- To verify relationship & causality of
factors. Determine what the relationship is & attempt to ensure that all factors have been
considered.
Once the project is understood & the baseline performance documented & verified that there
is real opportunity, it is time to do the analysis of the process. In this step, apply statistical
tools to validate root causes of problems. Any number of tools & tests can be used.
The objective is to understand the process at a level, sufficient to be able to formulate options
for improvement. We should be able to compare the various options with each other to
determine the most promising alternatives.
Superficial analysis & understanding will lead to unproductive options being selected, forcing
recycle through the process to make improvements. At the other extreme is thorough analysis
of only a few activities.
Improve (DMAIC) - CORRECT ANSWER✔✔- Or "Optimize" the process based upon the
analysis using techniques like "Design of Experiments".
During this phase, ideas & solutions are put to work. The Black Belt has discovered &
validated all known root causes for the existing opportunity. Approach requires Black Belt to
identify solutions. There must be checks to assure that the desired results are being achieved.
Some experiments & trials may be required in order to find the best solution. While doing
this, it is important that all project associates understand that these are trials & really are part
of the six sigma approach.
Control (DMAIC) - CORRECT ANSWER✔✔- To ensure that any variances are corrected
before they result in defects. Set up pilot runs to establish "process capability", transition to
production & thereafter continuously measure the process & institute control mechanisms.
