Course outline
Module 1
Module 1: Introduction to Operations Management
Introduction to Operations Management
Knowledge check
Q1. Which of the following best describes operations management?
- A. The management of financial accounts and investments within an organization
- B. The design, operation, and improvement of the systems that create and deliver a firm's core products and services
- C. The recruitment, training, and retention of an organization's workforce
- D. The development of marketing strategies to promote a company's brand
Q2. What is the primary role of the operations function in an organization?
- A. To set the company's long-term financial targets
- B. To transform inputs such as labor, materials, and capital into outputs such as goods and services
- C. To negotiate contracts with external shareholders
- D. To manage customer complaints and public relations
Q3. Which of the following is an example of a service operation rather than a manufacturing operation?
- A. An automobile assembly plant
- B. A bakery producing bread for retail sale
- C. A hospital providing patient care
- D. A steel mill producing sheet metal
Q4. What does the term 'productivity' measure in operations management?
- A. The total profit earned by a firm in a year
- B. The ratio of outputs produced to inputs used
- C. The number of employees working in a department
- D. The total value of a firm's assets
Q5. Which concept refers to the process of converting inputs into outputs in an operations system?
- A. Feedback loop
- B. Transformation process
- C. Demand forecasting
- D. Capacity planning
Module 2
Module 2: Process Design and Analysis
Process Design and Analysis
Knowledge check
Q1. In process design, what is the primary purpose of a process flow diagram?
- A. To calculate the financial cost of each product
- B. To visually map the sequence of steps and activities in a process ✓
- C. To schedule employee shifts across the week
- D. To track customer complaints over time
Why: A process flow diagram visually maps the sequence of steps, decisions, and activities in a process, making it easier to understand, analyze, and improve how work moves through a system.
Q2. What does cycle time measure in a process?
- A. The total time a customer waits in line
- B. The average time between completion of successive units at a workstation ✓
- C. The number of hours a machine is turned on
- D. The time required to train a new employee
Why: Cycle time is the average interval between the completion of one unit and the next at a given workstation. It determines how frequently output is produced and is central to analyzing process capacity.
Q3. Which step is typically the first in analyzing an existing process?
- A. Eliminating all non-value-added steps
- B. Documenting the current process as it actually operates ✓
- C. Purchasing new equipment
- D. Reducing the workforce
Why: Before improving a process, you must understand how it currently works. Documenting the actual steps, flows, and bottlenecks provides the baseline needed for meaningful analysis and redesign.
Q4. A bottleneck in a process is best described as:
- A. The first step in the process
- B. The step with the lowest capacity that limits the output of the entire process ✓
- C. The step that requires the most workers
- D. The final inspection step
Why: A bottleneck is the constraint with the lowest capacity, and it determines the maximum throughput of the whole process. Improving non-bottleneck steps does little to increase overall output.
Q5. What is the main difference between a process layout and a product layout?
- A. Process layouts are used only for services, product layouts only for manufacturing
- B. Process layouts group similar equipment together, while product layouts arrange equipment in the sequence needed for one product ✓
- C. Process layouts have no workers, product layouts have many
- D. Product layouts are always cheaper to operate than process layouts
Why: A process layout groups similar resources (e.g., all drills in one area) to handle varied work, while a product layout arranges workstations in sequence for a standardized product flow, favoring high volume and efficiency.
Module 3
Module 3: Capacity Planning and Forecasting
Capacity Planning and Forecasting
Knowledge check
Q1. In operations management, what does 'design capacity' refer to?
- A. The actual output a system achieves under normal conditions
- B. The maximum output a system can achieve under ideal conditions ✓
- C. The average output over a fiscal year
- D. The minimum output needed to meet customer demand
Why: Design capacity is the theoretical maximum output a system can produce under ideal conditions, with no breaks, downtime, or quality losses. Actual output is typically lower because of real-world constraints.
Q2. What is the formula for capacity utilization?
- A. Design capacity divided by actual output
- B. Actual output divided by design capacity ✓
- C. Actual output minus design capacity
- D. Design capacity multiplied by efficiency
Why: Capacity utilization is calculated as actual output divided by design capacity, expressed as a percentage. It shows how much of the system's potential capacity is being used.
Q3. Which forecasting method uses the average of the most recent n periods to predict the next period?
- A. Exponential smoothing
- B. Moving average ✓
- C. Linear regression
- D. Delphi method
Why: A moving average forecast averages the most recent n periods of data to estimate the next period's value. It smooths out random fluctuations but lags behind trends.
Q4. Which type of forecast is most appropriate for long-term capacity decisions such as building a new factory?
- A. Short-term qualitative forecast
- B. Long-term strategic forecast ✓
- C. Daily operational forecast
- D. Weekly scheduling forecast
Why: Long-term strategic forecasts cover multiple years and support major capital decisions like facility construction. Short-term forecasts are too narrow in horizon for such investments.
Q5. A company's forecast for next month is 500 units, and actual demand is 450 units. What is the forecast error?
- A. -50 units
- B. 50 units ✓
- C. 450 units
- D. 500 units
Why: Forecast error is calculated as actual demand minus forecast, or in this convention forecast minus actual. Here, the absolute error is 50 units, showing a forecast that overestimated demand by 50 units.
Module 4
Module 4: Inventory Management
Inventory Management
Knowledge check
Q1. What is the primary purpose of inventory management in operations?
- A. To maximize the number of products stored in a warehouse
- B. To balance the costs of holding stock against the costs of running out of stock ✓
- C. To eliminate all inventory so that no money is tied up in goods
- D. To ensure that suppliers always deliver goods on the same day each week
Why: Inventory management seeks the right balance between holding costs (storage, capital, obsolescence) and shortage costs (lost sales, production stoppages, customer dissatisfaction).
Q2. Which inventory category typically includes raw materials, work-in-process, and finished goods?
- A. Cycle stock
- B. Safety stock
- C. Pipeline stock
- D. Inventory by stage of production ✓
Why: Inventory can be classified by stage of production: raw materials, work-in-process (WIP), and finished goods. Cycle, safety, and pipeline stock are classified by purpose or function instead.
Q3. What does the Economic Order Quantity (EOQ) model aim to determine?
- A. The optimal selling price for each product
- B. The order size that minimizes the total of ordering costs and holding costs ✓
- C. The maximum number of suppliers a company should use
- D. The exact date on which a customer will place an order
Why: EOQ calculates the order quantity that minimizes total annual inventory cost by balancing ordering costs (which fall as order size grows) against holding costs (which rise as order size grows).
Q4. What is safety stock?
- A. Stock kept in a locked area to prevent theft
- B. Stock that is held to protect against uncertainty in demand or supply lead time ✓
- C. Stock that has passed its expiration date and must be discarded
- D. The minimum stock a supplier must keep on hand for a buyer
Why: Safety stock is extra inventory held as a buffer against variability in demand or in supplier lead times, reducing the risk of stockouts.
Q5. In the ABC inventory classification method, which items are typically categorized as 'A' items?
- A. Items with the lowest annual dollar usage and the highest unit counts
- B. Items with a high annual dollar usage that represent a small share of total items ✓
- C. Items that are purchased only once and never reordered
- D. Items that are easiest to store in standard shelving
Why: A items are a small percentage of total SKUs but account for a large share of annual consumption value, so they warrant the tightest control and most frequent review.
Module 5
Module 5: Quality Control and Improvement
Quality Control and Improvement
Knowledge check
Q1. What is the primary purpose of a control chart in quality control?
- A. To calculate the total cost of production
- B. To monitor whether a process is stable and in statistical control over time ✓
- C. To schedule maintenance for production equipment
- D. To track employee attendance and productivity
Why: Control charts plot process data over time against control limits, allowing managers to detect unusual variation and determine whether a process is stable and predictable.
Q2. Which of the following is considered common cause variation?
- A. A machine operator forgetting to calibrate a tool
- B. A power outage that stops production for an hour
- C. Natural, expected fluctuation inherent in a stable process ✓
- D. A defective batch of raw material from a single supplier shipment
Why: Common cause variation is the random, inherent noise present in any process. Special causes, such as a calibration error, outage, or defective batch, are assignable and unusual.
Q3. What does the acronym DMAIC stand for in Six Sigma?
- A. Design, Measure, Analyze, Implement, Control
- B. Define, Measure, Analyze, Improve, Control ✓
- C. Define, Monitor, Adjust, Inspect, Correct
- D. Develop, Manage, Align, Evaluate, Complete
Why: DMAIC is the core Six Sigma improvement methodology: Define the problem, Measure current performance, Analyze root causes, Improve the process, and Control to sustain gains.
Q4. A Pareto chart is most useful for which purpose?
- A. Showing the flow of steps in a process
- B. Identifying the vital few causes that account for most of the problems ✓
- C. Plotting the relationship between two continuous variables
- D. Displaying the distribution of measurements around a mean
Why: Based on the 80/20 principle, a Pareto chart orders defect categories from most to least frequent, helping teams focus improvement efforts on the few causes responsible for most problems.
Q5. What is the main goal of total quality management (TQM)?
- A. To reduce the workforce to minimize labor costs
- B. To inspect every final product to eliminate all defects
- C. To embed continuous improvement and customer focus throughout the entire organization ✓
- D. To outsource quality functions to specialized third-party firms
Why: TQM is a management philosophy that involves everyone in the organization in continuously improving processes and products with a strong emphasis on customer satisfaction, rather than relying solely on end-of-line inspection.
Module 6
Module 6: Supply Chain Coordination
Supply Chain Coordination
Knowledge check
Q1. What is the primary goal of supply chain coordination?
- A. To maximize the number of suppliers a firm works with
- B. To align the activities of supply chain partners so that they work toward common objectives ✓
- C. To eliminate all inventory across the supply chain
- D. To minimize the number of transportation modes used
Why: Supply chain coordination aims to align the decisions and activities of all partners (suppliers, manufacturers, distributors, retailers) so they work toward shared goals, reducing conflicts and improving overall system performance.
Q2. Which of the following is a common cause of the bullwhip effect?
- A. Accurate and shared point-of-sale data
- B. Demand forecast updating by each supply chain stage ✓
- C. Vendor-managed inventory arrangements
- D. Everyday low pricing strategies
Why: The bullwhip effect occurs when each stage of the supply chain bases orders on forecasts or orders from the downstream stage, amplifying demand variability upstream. Demand forecast updating is one of its key causes, along with order batching, price fluctuations, and rationing games.
Q3. What does vendor-managed inventory (VMI) involve?
- A. The buyer decides when and how much to order from the supplier
- B. The supplier monitors the buyer's inventory levels and decides replenishment ✓
- C. Both parties share no information about inventory
- D. The buyer hires a third party to manage all warehouses
Why: In VMI, the supplier takes responsibility for managing the buyer's inventory, using shared data such as sales and stock levels to determine when and how much to replenish. This improves coordination and can reduce the bullwhip effect.
Q4. Which term describes a situation where individual supply chain partners act in their own self-interest, leading to suboptimal overall performance?
- A. Economies of scale
- B. Double marginalization ✓
- C. Postponement
- D. Cross-docking
Why: Double marginalization occurs when each firm in a supply chain adds its own profit margin, pushing the final price above what would be optimal for the whole chain. Coordination mechanisms such as revenue sharing or quantity discounts help resolve it.
Q5. Why is information sharing important for supply chain coordination?
- A. It allows partners to hide their costs from one another
- B. It reduces uncertainty and enables better planning across the chain ✓
- C. It eliminates the need for transportation planning
- D. It guarantees that all partners earn equal profits
Why: Sharing information such as demand data, inventory levels, and production schedules reduces uncertainty for all partners, allowing more accurate forecasts, better planning, and lower costs throughout the supply chain.
Module 7
Module 7: Lean Operations and Continuous Improvement
Lean Operations and Continuous Improvement
Knowledge check
Q1. In lean operations, what does the term 'muda' refer to?
- A. Continuous improvement teams
- B. Waste, any activity that adds no value for the customer ✓
- C. A standardized work chart
- D. The pull signal between workstations
Why: Muda is the Japanese term for waste. Lean focuses on eliminating activities that consume resources without adding value from the customer's perspective.
Q2. Which of the following is one of the seven wastes identified in lean manufacturing?
- A. Overproduction ✓
- B. Overtime scheduling
- C. Customer complaints
- D. Supplier diversification
Why: Overproduction is one of the seven classic wastes (along with waiting, transportation, over-processing, inventory, motion, and defects). Producing more than needed ties up cash and hides other problems.
Q3. What is the primary purpose of a kanban system?
- A. To forecast long-term demand
- B. To control production and inventory through pull signals ✓
- C. To schedule employee shifts
- D. To track financial budgets
Why: Kanban uses visual cards or signals to trigger production or replenishment only when downstream processes need material, supporting a pull system and limiting excess inventory.
Q4. What does the 'Kaizen' philosophy emphasize?
- A. Large one-time technology investments
- B. Small, incremental, continuous improvements involving all employees ✓
- C. Outsourcing non-core activities
- D. Reducing the workforce during downturns
Why: Kaizen means 'change for the better.' It emphasizes frequent, small improvements driven by everyone in the organization rather than occasional major overhauls.
Q5. What is the main goal of 5S in a lean workplace?
- A. To reduce product prices
- B. To organize and standardize the workplace for efficiency and safety ✓
- C. To increase the number of product variants
- D. To shorten supplier lead times
Why: 5S (Sort, Set in order, Shine, Standardize, Sustain) creates a clean, organized, and standardized workplace, which reduces wasted motion and search time and improves safety and quality.