供应链管理HomeworkChopraChapter 7NEW.docx

1、供应链管理HomeworkChopraChapter 7NEWChapter 7Demand Forecasting in a Supply ChainTrue/False1. The forecast of demand forms the basis for all strategic and planning decisions in a supply chain.Answer: TrueDifficulty: Moderate2. Throughout the supply chain, all pull processes are performed in anticipation

2、of customer demand, whereas all push processes are performed in response to customer demand.Answer: FalseDifficulty: Easy3. For pull processes, a manager must forecast what customer demand will be in order to plan the level of available capacity and inventory.Answer: TrueDifficulty: Moderate4. For p

3、ush processes, a manager must forecast what customer demand will be in order to plan the level of available capacity and inventory.Answer: FalseDifficulty: HardThe resulting forecast accuracy enables supply chains to be both more responsive and more efficient in serving their customers. 5. The resul

4、t when each stage in the supply chain makes its own separate forecast is often a match between supply and demand, because these forecasts are often very different.Answer: FalseDifficulty: Moderate6. When all stages of a supply chain produce a collaborative forecast, it tends to be much more accurate

5、.Answer: TrueDifficulty: Easy7. Leaders in many supply chains have started moving toward collaborative forecasting to improve their ability to match supply and demand.Answer: TrueDifficulty: Moderate8. Mature products with stable demand are usually the most difficult to forecast.Answer: FalseDifficu

6、lty: Moderate9. Forecasting and the accompanying managerial decisions are extremely difficult when either the supply of raw materials or the demand for the finished product is highly variable.Answer: TrueDifficulty: Easy10. Forecasts are always right.Answer: FalseDifficulty: Easy11. Forecasts should

7、 include both the expected value of the forecast and a measure of forecast error.Answer: True Difficulty: Moderate12. Long-term forecasts are usually more accurate than short-term forecasts.Answer: FalseDifficulty: Moderate13. Aggregate forecasts are usually more accurate than disaggregate forecasts

8、, as they tend to have a smaller standard deviation of error relative to the mean.Answer: TrueDifficulty: Moderate14. In general, the further up the supply chain a company is (or the further they are from the consumer), the smaller the distortion of information they receive.Answer: FalseDifficulty:

9、Easy15. Collaborative forecasting based on sales to the end customer can help enterprises further up the supply chain reduce forecast error.Answer: TrueDifficulty: Moderate16. Qualitative forecasting methods are most appropriate when there is good historical data available or when experts do not hav

10、e market intelligence that is critical in making the forecast.Answer: FalseDifficulty: Moderate17. Time series forecasting methods are based on the assumption that past demand history is a good indicator of future demand.Answer: TrueDifficulty: Easy18. Time series forecasting methods are the most di

11、fficult methods to implement.Answer: FalseDifficulty: Moderate19. Causal forecasting methods find a correlation between demand and environmental factors and use estimates of what environmental factors will be to forecast future demand.Answer: TrueDifficulty: Moderate20. Simulation forecasting method

12、s imitate the consumer choices that give rise to demand to arrive at a forecast.Answer: TrueDifficulty: Moderate21. The objective of forecasting is to filter out the random component (noise) and estimate the systematic component.Answer: TrueDifficulty: Moderate22. The forecast error measures the dif

13、ference between the forecast and the estimate.Answer: FalseDifficulty: Easy23. The goal of any forecasting method is to predict the systematic component of demand and estimate the random component.Answer: TrueDifficulty: Moderate24. A static method of forecasting assumes that the estimates of level,

14、 trend, and seasonality within the systematic component vary as new demand is observed.Answer: FalseDifficulty: Easy25. In adaptive forecasting, the estimates of level, trend, and seasonality are updated after each demand observation.Answer: TrueDifficulty: Moderate26. The moving average forecast me

15、thod is used when demand has an observable trend or seasonality.Answer: FalseDifficulty: ModerateMultiple Choice1. The basis for all strategic and planning decisions in a supply chain comes froma. the forecast of demand.b. sales targets.c. profitability projections.d. production efficiency goals.e. all of the aboveAnswer: aDifficulty: Easy2. For push processes, a manager must forecast what customer demand will be in order toa. plan the service level.b. plan the level of available capacity and inventory.c. plan the level of productivity.d. plan the level of production.e. none of the aboveAnsw