WGU C720 Operations and Supply Chain Management Questions
with Verified Answers (Correct Update)
Question 1: Why would the company use this check sheet
Answer: To develop a Pareto chart
identifying the root causes
of engine defects
Question 2: Which aspect of quality is demonstrated by a vehicle
that has a useful
life of 165,000 miles
Answer: Durability
Question 3: A quality improvement team is trying to illustrate to
upper management how a process is varying over time
as measurements are collected.
Which two statistical process control (SPC) tools should
the team use
Answer: Run charts and Control
charts
Question 4: The CEO of a service company wants to change the
strategy of the
com- pany from volume sales to high-quality products.
Which philosophy should the CEO implement to emphasize quality
over volume
Answer: Deming's 14 points
Page 1
,Question 5: A company sells garage doors through a national retailer and
contracts with local installers to complete the installations. The operations
manager is responsible for completing the installations in a 14-day period
after the sale. The company will be penalized financially if it fails to achieve
these ob- jectives. The operations manager's daily responsibilities include
contacting installers to expedite orders and ensure
deadlines are met.
Which two tools should be used to measure installer
performance?
Answer: Control charts to measure
the time elapsed to
completion and Run charts
to chart output around the
14-day central
tendency
Question 6: Which quality tool examines patterns, flow, and causes S
of variation of
data points over time
Answer: tatistical process control
Question 7: A vice president of a major retailer is trying to reduce
the wait time for
customers in the checkout line by appropriately opening checkout lines. To
do this, the VP needs to know the relationship and
degree of correlation
between monthly customer visits and area population.
Which tool should be used in this situation
Answer: Scatter plot
Question 8: Which two company practices reflect the guiding prin- A
ciples of Six
Sigma?
Answer: A company tries to reduce
variation in the quality of
products it otters.
A company emphasizes
the quality of suppliers because the quality of
outputs are determined by
the quality of inputs.
Page 2
, Question 9: Six Sigma is adopted by a manufacturing company.
How can the company use Six Sigma to establish qual- th
ity improvement
Answer: There should be no more
han 3.4 defects per million products
from a manufactur- ing
company statistically.
Question 10: Company makes rulers that are designed to be 20 cm
in length
with allowance ±0.1 cm.
If the actual length of a ruler is 20.2 cm, which factor
will the company use
to judge the quality of the length of the rulers
Answer: Conformance
Question 11: Which quality management philosophy uses
cause-and-effect fishbone
diagrams for root-cause analysis, emphasizes a bottom-up approach to
quality, and considers standardization and quality control to move
together in improvement
Answer: Ishikawa's quality circle
Question 12: Which quality management philosophy assigns cost to J
quality, defines
quality by how well a product can be used for its intended purpose, and
uses Pareto charts
Answer: uran Institute's management theory
Question 13: A clothing retailer sends out evaluations to customers
to rate quality as "outstanding," "good," "average," and
"bad."
If the retailer wants to know the annual frequency
of each evaluation catego- ry, which tool should the
retailer use
Answer: Histogram
Page 3
with Verified Answers (Correct Update)
Question 1: Why would the company use this check sheet
Answer: To develop a Pareto chart
identifying the root causes
of engine defects
Question 2: Which aspect of quality is demonstrated by a vehicle
that has a useful
life of 165,000 miles
Answer: Durability
Question 3: A quality improvement team is trying to illustrate to
upper management how a process is varying over time
as measurements are collected.
Which two statistical process control (SPC) tools should
the team use
Answer: Run charts and Control
charts
Question 4: The CEO of a service company wants to change the
strategy of the
com- pany from volume sales to high-quality products.
Which philosophy should the CEO implement to emphasize quality
over volume
Answer: Deming's 14 points
Page 1
,Question 5: A company sells garage doors through a national retailer and
contracts with local installers to complete the installations. The operations
manager is responsible for completing the installations in a 14-day period
after the sale. The company will be penalized financially if it fails to achieve
these ob- jectives. The operations manager's daily responsibilities include
contacting installers to expedite orders and ensure
deadlines are met.
Which two tools should be used to measure installer
performance?
Answer: Control charts to measure
the time elapsed to
completion and Run charts
to chart output around the
14-day central
tendency
Question 6: Which quality tool examines patterns, flow, and causes S
of variation of
data points over time
Answer: tatistical process control
Question 7: A vice president of a major retailer is trying to reduce
the wait time for
customers in the checkout line by appropriately opening checkout lines. To
do this, the VP needs to know the relationship and
degree of correlation
between monthly customer visits and area population.
Which tool should be used in this situation
Answer: Scatter plot
Question 8: Which two company practices reflect the guiding prin- A
ciples of Six
Sigma?
Answer: A company tries to reduce
variation in the quality of
products it otters.
A company emphasizes
the quality of suppliers because the quality of
outputs are determined by
the quality of inputs.
Page 2
, Question 9: Six Sigma is adopted by a manufacturing company.
How can the company use Six Sigma to establish qual- th
ity improvement
Answer: There should be no more
han 3.4 defects per million products
from a manufactur- ing
company statistically.
Question 10: Company makes rulers that are designed to be 20 cm
in length
with allowance ±0.1 cm.
If the actual length of a ruler is 20.2 cm, which factor
will the company use
to judge the quality of the length of the rulers
Answer: Conformance
Question 11: Which quality management philosophy uses
cause-and-effect fishbone
diagrams for root-cause analysis, emphasizes a bottom-up approach to
quality, and considers standardization and quality control to move
together in improvement
Answer: Ishikawa's quality circle
Question 12: Which quality management philosophy assigns cost to J
quality, defines
quality by how well a product can be used for its intended purpose, and
uses Pareto charts
Answer: uran Institute's management theory
Question 13: A clothing retailer sends out evaluations to customers
to rate quality as "outstanding," "good," "average," and
"bad."
If the retailer wants to know the annual frequency
of each evaluation catego- ry, which tool should the
retailer use
Answer: Histogram
Page 3
