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Lean Six Sigma Black Belt With complete solutions latest update
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Lean Six Sigma Black Belt With complete solutions latest update
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Passed!!2024/2025
Lean Six Sigma Black Belt
PDCA Answer: Plan, Do, Check, Act
The term "Six Sigma" refers to... 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 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) 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.
, Passed!!
2024/2025
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) 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) 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.
, Passed!!
2024/2025
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) 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) 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.
Many people think the best performance you can ever get from a process is at the
very beginning. Over time, there is an expectation that slowly things will get a
little worse until finally it is time for another major effort toward improvement.
Contrasted with the Kaizen approach that seeks to make everything incrementally
better on a continuous basis.
The sum of incremental improvements can be quite large.
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