Free Certified Supply Chain Professional (CSCP) Demand Management and Forecasting Questions and Answers — Questions and Answers
Question 1: A company is introducing a revolutionary new technology product for which no historical sales data exists. To develop a demand forecast, the marketing department gathers a panel of industry analysts, futurists, and technology experts. The process involves multiple rounds of anonymous questionnaires and feedback to arrive at a group consensus. Which forecasting method is being used?
- Time series analysis
- Causal modeling
- Delphi method (Correct answer)
- Exponential smoothing
Correct answer: Delphi method
The Delphi method is a qualitative forecasting technique that gathers opinions from a panel of anonymous experts through a series of structured questionnaires and feedback rounds. It is particularly useful for long-range forecasting and situations with little to no historical data, such as the launch of a new technology.
Question 2: A manufacturer of winter coats notices that demand for its products increases significantly in the autumn and peaks in early winter, while demand is very low during spring and summer. This predictable fluctuation that occurs within a one-year period is best described as which type of demand pattern?
- Trend
- Cyclical
- Random variation
- Seasonal (Correct answer)
Correct answer: Seasonal
Seasonality refers to predictable, repeating patterns of demand fluctuation that occur within a fixed period, typically one year. The example of winter coat sales increasing in autumn and winter and decreasing in spring and summer is a classic illustration of a seasonal demand pattern.
Question 3: A retailer and a manufacturer are working to reduce the bullwhip effect in their shared supply chain. They decide to jointly develop a sales forecast, share inventory and point-of-sale data, and coordinate replenishment activities. This practice is best known as:
- Vendor-Managed Inventory (VMI)
- Collaborative Planning, Forecasting, and Replenishment (CPFR) (Correct answer)
- Materials Requirements Planning (MRP)
- Demand shaping
Correct answer: Collaborative Planning, Forecasting, and Replenishment (CPFR)
Collaborative Planning, Forecasting, and Replenishment (CPFR) is a business practice where trading partners collaborate on planning, forecasting, and replenishment processes to meet customer demand while reducing costs. By sharing data and coordinating decisions, companies can improve forecast accuracy, optimize inventory, and mitigate the bullwhip effect.
Question 4: A company wants to actively influence customer demand to better match its available supply. During a period of low inventory for a premium product, the company offers a price discount on a similar, more readily available alternative. This is an example of which demand management strategy?
- Demand shaping (Correct answer)
- Time series forecasting
- Inventory optimization
- Order fulfillment
Correct answer: Demand shaping
Demand shaping involves using various tactics, such as pricing adjustments, promotions, and product substitutions, to influence customer demand patterns to align with business objectives, like managing inventory levels or maximizing profitability.
Question 5: A supply chain analyst is evaluating the accuracy of a forecasting model. The actual demand for a product was 200 units, and the forecast was 250 units. What is the Mean Absolute Percent Error (MAPE) for this single data point?
- 20%
- 25% (Correct answer)
- 50%
- 125%
Correct answer: 25%
The formula for MAPE for a single point is |(Actual - Forecast) / Actual| * 100%. In this case, the calculation is |(200 - 250) / 200| * 100%. This simplifies to |-50 / 200| * 100%, which is 0.25 * 100%, resulting in a MAPE of 25%.
Question 6: Which of the following is a primary cause of the bullwhip effect in a supply chain?
- Real-time sharing of point-of-sale data
- Stable pricing and infrequent promotions
- Lack of communication and long lead times (Correct answer)
- Small, frequent order batches
Correct answer: Lack of communication and long lead times
The bullwhip effect, where demand variability amplifies as it moves up the supply chain, is primarily caused by factors like lack of communication between partners, long lead times, and order batching. These issues lead to uncertainty and distorted demand signals, causing each stage to carry excess inventory as a buffer.
Free Certified Supply Chain Professional (CSCP) Demand Management and Forecasting Questions and Answers
A company is introducing a revolutionary new technology product for which no historical sales data exists.
To develop a demand forecast, the marketing department gathers a panel of industry analysts, futurists, and technology experts.
The process involves multiple rounds of anonymous questionnaires and feedback to arrive at a group consensus.
Which forecasting method is being used?