WGU C215 OPERATIONS AND SUPPLY
CHAIN MANAGEMENT FINAL EXAM
2026/2027 QUESTIONS AND ANSWERS
1. Which metric is used to measure the total variation of a process relative to the
specification limits, indicating how well the process can produce parts within those limits?
A. Mean Absolute Deviation (MAD)
B. Process Capability Index (Cpk)
C. Coefficient of Variation
D. Standard Deviation
Answer: B
Conceptual Explanation: The Process Capability Index (Cpk) measures how centered a
process is relative to the design specifications and its ability to produce within those
tolerances.
2. In the context of Forecasting, which method utilizes a panel of experts who answer
questionnaires in two or more rounds to reach a consensus?
A. Exponential Smoothing
,B. Linear Regression
C. Delphi Method
D. Time Series Analysis
Answer: C
Conceptual Explanation: The Delphi method is a qualitative forecasting technique that
relies on a group of experts to reach a consensus through iterative surveys.
3. What is the primary goal of the Economic Order Quantity (EOQ) model?
A. To minimize the total cost of holding and ordering inventory
B. To maximize the number of orders placed annually
C. To eliminate all safety stock
D. To maximize the inventory turnover ratio
Answer: A
Conceptual Explanation: EOQ is a formula used to determine the optimal order quantity
that minimizes the sum of annual ordering costs and annual holding costs.
4. A company is evaluating its supply chain and notices that small fluctuations in consumer
demand are causing large fluctuations in orders up the supply chain. What is this
phenomenon called?
A. The Domino Effect
B. The Bullwhip Effect
, C. Supply Chain Resonance
D. Demand Elasticity
Answer: B
Conceptual Explanation: The bullwhip effect refers to the increasing fluctuations in
inventory in response to customer demand changes as one moves up the supply chain.
5. Which of the following describes the ‘Triple Bottom Line’ in sustainable operations?
A. Economic, Social, and Environmental performance
B. Profit, Product, and Place
C. Revenue, Expenses, and Net Income
D. Efficiency, Effectiveness, and Economy
Answer: A
Conceptual Explanation: The Triple Bottom Line emphasizes that a company’s success
should be measured not just by profit (Economic), but also by its impact on people (Social)
and the planet (Environmental).
6. In Six Sigma methodology, the DMAIC process stands for:
A. Design, Measure, Assess, Improve, Control
B. Define, Maintain, Analyze, Integrate, Check
C. Design, Manage, Analyze, Inspect, Control
CHAIN MANAGEMENT FINAL EXAM
2026/2027 QUESTIONS AND ANSWERS
1. Which metric is used to measure the total variation of a process relative to the
specification limits, indicating how well the process can produce parts within those limits?
A. Mean Absolute Deviation (MAD)
B. Process Capability Index (Cpk)
C. Coefficient of Variation
D. Standard Deviation
Answer: B
Conceptual Explanation: The Process Capability Index (Cpk) measures how centered a
process is relative to the design specifications and its ability to produce within those
tolerances.
2. In the context of Forecasting, which method utilizes a panel of experts who answer
questionnaires in two or more rounds to reach a consensus?
A. Exponential Smoothing
,B. Linear Regression
C. Delphi Method
D. Time Series Analysis
Answer: C
Conceptual Explanation: The Delphi method is a qualitative forecasting technique that
relies on a group of experts to reach a consensus through iterative surveys.
3. What is the primary goal of the Economic Order Quantity (EOQ) model?
A. To minimize the total cost of holding and ordering inventory
B. To maximize the number of orders placed annually
C. To eliminate all safety stock
D. To maximize the inventory turnover ratio
Answer: A
Conceptual Explanation: EOQ is a formula used to determine the optimal order quantity
that minimizes the sum of annual ordering costs and annual holding costs.
4. A company is evaluating its supply chain and notices that small fluctuations in consumer
demand are causing large fluctuations in orders up the supply chain. What is this
phenomenon called?
A. The Domino Effect
B. The Bullwhip Effect
, C. Supply Chain Resonance
D. Demand Elasticity
Answer: B
Conceptual Explanation: The bullwhip effect refers to the increasing fluctuations in
inventory in response to customer demand changes as one moves up the supply chain.
5. Which of the following describes the ‘Triple Bottom Line’ in sustainable operations?
A. Economic, Social, and Environmental performance
B. Profit, Product, and Place
C. Revenue, Expenses, and Net Income
D. Efficiency, Effectiveness, and Economy
Answer: A
Conceptual Explanation: The Triple Bottom Line emphasizes that a company’s success
should be measured not just by profit (Economic), but also by its impact on people (Social)
and the planet (Environmental).
6. In Six Sigma methodology, the DMAIC process stands for:
A. Design, Measure, Assess, Improve, Control
B. Define, Maintain, Analyze, Integrate, Check
C. Design, Manage, Analyze, Inspect, Control
