WGU C720 OA PRACTICE PAPER 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◉The Plan-Do-Check-Act Cycle. Answer: Also referred to as the
Deming Wheel or Shewhart Cycle.
o Plan - Make sure everything is documented and make a plan of
action
o Do - Implement the plan and document changes
o Check - Analyze to see if goals have been achieved
o Act - Standardize the changes and communicate the results. This is
a cycle, back to the beginning.
◉Statistical process control (SPC). Answer: The use of statistical
methods to determine when a process that produces a good or
service is getting close to producing an unacceptable level of defects.
◉Cause-and-effect diagrams or fishbone diagrams or Ishikawa
diagrams. Answer: Show the impact of various inputs into the result
of a process. They help organizations isolate the root causes of
problems such as bottlenecks in their processes.
,◉Check sheets. Answer: The means used to record data points in
real-time at the site where the data is generated. This is often the
first tool used to assess a process and often the data is "raw"
meaning it is straight from the source and without any
interpretation.
◉Control charts. Answer: Graphical depictions of process output
where the raw data is plotted in real-time within upper (UCL) and
lower control limits (LCL).
◉Run charts. Answer: Form of control chart plotted in real-time for
processes that might have common features, a common scale, or
some form of central tendency
◉Histograms (or box chart). Answer: Demonstrate the frequency of
data observations within a preset range of values.
◉Pareto charts. Answer: Represents data values in a descending
(highest to lowest) order to visualize the most frequent occurrences.
◉Scatter Plot (diagrams). Answer: Displays data as a relationship to
show the correlation between two variables.
, ◉Six Sigma. Answer: A continuous improvement strategy that
relates to the firm's ability to produce error free products.
Specifically - 3.4 defects per 1 million units.
DMAIC
o Define
o Measure
o Analyze
o Improve
o Control
◉Six Sigma: Define. Answer: In this stage you _____ the problem or
improvement opportunity. This stage includes: Project Charter, Voice
of the customer, Value Stream Mapping.
◉Project Charter. Answer: Includes the scope of the project, the
problem statement, time frame, boundaries, and team members.
◉Voice of the Customer (VOC). Answer: This is includes feedback
regarding characteristics that are critical for satisfaction of the
customer.
QUESTIONS WITH SOLUTIONS GRADED A+
◉The Plan-Do-Check-Act Cycle. Answer: Also referred to as the
Deming Wheel or Shewhart Cycle.
o Plan - Make sure everything is documented and make a plan of
action
o Do - Implement the plan and document changes
o Check - Analyze to see if goals have been achieved
o Act - Standardize the changes and communicate the results. This is
a cycle, back to the beginning.
◉Statistical process control (SPC). Answer: The use of statistical
methods to determine when a process that produces a good or
service is getting close to producing an unacceptable level of defects.
◉Cause-and-effect diagrams or fishbone diagrams or Ishikawa
diagrams. Answer: Show the impact of various inputs into the result
of a process. They help organizations isolate the root causes of
problems such as bottlenecks in their processes.
,◉Check sheets. Answer: The means used to record data points in
real-time at the site where the data is generated. This is often the
first tool used to assess a process and often the data is "raw"
meaning it is straight from the source and without any
interpretation.
◉Control charts. Answer: Graphical depictions of process output
where the raw data is plotted in real-time within upper (UCL) and
lower control limits (LCL).
◉Run charts. Answer: Form of control chart plotted in real-time for
processes that might have common features, a common scale, or
some form of central tendency
◉Histograms (or box chart). Answer: Demonstrate the frequency of
data observations within a preset range of values.
◉Pareto charts. Answer: Represents data values in a descending
(highest to lowest) order to visualize the most frequent occurrences.
◉Scatter Plot (diagrams). Answer: Displays data as a relationship to
show the correlation between two variables.
, ◉Six Sigma. Answer: A continuous improvement strategy that
relates to the firm's ability to produce error free products.
Specifically - 3.4 defects per 1 million units.
DMAIC
o Define
o Measure
o Analyze
o Improve
o Control
◉Six Sigma: Define. Answer: In this stage you _____ the problem or
improvement opportunity. This stage includes: Project Charter, Voice
of the customer, Value Stream Mapping.
◉Project Charter. Answer: Includes the scope of the project, the
problem statement, time frame, boundaries, and team members.
◉Voice of the Customer (VOC). Answer: This is includes feedback
regarding characteristics that are critical for satisfaction of the
customer.
