供应链管理HomeworkChopraChapter 7NEW.docx

供应链管理HomeworkChopraChapter 7NEW.docx

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供应链管理HomeworkChopraChapter7NEW

Chapter7

DemandForecastinginaSupplyChain

True/False

1.Theforecastofdemandformsthebasisforallstrategicandplanningdecisionsinasupplychain.

Answer:

True

Difficulty:

Moderate

2.Throughoutthesupplychain,allpullprocessesareperformedinanticipationofcustomerdemand,whereasallpushprocessesareperformedinresponsetocustomerdemand.

Answer:

False

Difficulty:

Easy

3.Forpullprocesses,amanagermustforecastwhatcustomerdemandwillbeinordertoplanthelevelofavailablecapacityandinventory.

Answer:

True

Difficulty:

Moderate

4.Forpushprocesses,amanagermustforecastwhatcustomerdemandwillbeinordertoplanthelevelofavailablecapacityandinventory.

Answer:

False

Difficulty:

Hard

Theresultingforecastaccuracyenablessupplychainstobebothmoreresponsiveandmoreefficientinservingtheircustomers.

5.Theresultwheneachstageinthesupplychainmakesitsownseparateforecastisoftenamatchbetweensupplyanddemand,becausetheseforecastsareoftenverydifferent.

Answer:

False

Difficulty:

Moderate

6.Whenallstagesofasupplychainproduceacollaborativeforecast,ittendstobemuchmoreaccurate.

Answer:

True

Difficulty:

Easy

7.Leadersinmanysupplychainshavestartedmovingtowardcollaborativeforecastingtoimprovetheirabilitytomatchsupplyanddemand.

Answer:

True

Difficulty:

Moderate

8.Matureproductswithstabledemandareusuallythemostdifficulttoforecast.

Answer:

False

Difficulty:

Moderate

9.Forecastingandtheaccompanyingmanagerialdecisionsareextremelydifficultwheneitherthesupplyofrawmaterialsorthedemandforthefinishedproductishighlyvariable.

Answer:

True

Difficulty:

Easy

10.Forecastsarealwaysright.

Answer:

False

Difficulty:

Easy

11.Forecastsshouldincludeboththeexpectedvalueoftheforecastandameasureofforecasterror.

Answer:

True

Difficulty:

Moderate

12.Long-termforecastsareusuallymoreaccuratethanshort-termforecasts.

Answer:

False

Difficulty:

Moderate

13.Aggregateforecastsareusuallymoreaccuratethandisaggregateforecasts,astheytendtohaveasmallerstandarddeviationoferrorrelativetothemean.

Answer:

True

Difficulty:

Moderate

14.Ingeneral,thefurtherupthesupplychainacompanyis（orthefurthertheyarefromtheconsumer）,thesmallerthedistortionofinformationtheyreceive.

Answer:

False

Difficulty:

Easy

15.Collaborativeforecastingbasedonsalestotheendcustomercanhelpenterprisesfurtherupthesupplychainreduceforecasterror.

Answer:

True

Difficulty:

Moderate

16.Qualitativeforecastingmethodsaremostappropriatewhenthereisgoodhistoricaldataavailableorwhenexpertsdonothavemarketintelligencethatiscriticalinmakingtheforecast.

Answer:

False

Difficulty:

Moderate

17.Timeseriesforecastingmethodsarebasedontheassumptionthatpastdemandhistoryisagoodindicatoroffuturedemand.

Answer:

True

Difficulty:

Easy

18.Timeseriesforecastingmethodsarethemostdifficultmethodstoimplement.

Answer:

False

Difficulty:

Moderate

19.Causalforecastingmethodsfindacorrelationbetweendemandandenvironmentalfactorsanduseestimatesofwhatenvironmentalfactorswillbetoforecastfuturedemand.

Answer:

True

Difficulty:

Moderate

20.Simulationforecastingmethodsimitatetheconsumerchoicesthatgiverisetodemandtoarriveataforecast.

Answer:

True

Difficulty:

Moderate

21.Theobjectiveofforecastingistofilterouttherandomcomponent（noise）andestimatethesystematiccomponent.

Answer:

True

Difficulty:

Moderate

22.Theforecasterrormeasuresthedifferencebetweentheforecastandtheestimate.

Answer:

False

Difficulty:

Easy

23.Thegoalofanyforecastingmethodistopredictthesystematiccomponentofdemandandestimatetherandomcomponent.

Answer:

True

Difficulty:

Moderate

24.Astaticmethodofforecastingassumesthattheestimatesoflevel,trend,andseasonalitywithinthesystematiccomponentvaryasnewdemandisobserved.

Answer:

False

Difficulty:

Easy

25.Inadaptiveforecasting,theestimatesoflevel,trend,andseasonalityareupdatedaftereachdemandobservation.

Answer:

True

Difficulty:

Moderate

26.Themovingaverageforecastmethodisusedwhendemandhasanobservabletrendorseasonality.

Answer:

False

Difficulty:

Moderate

MultipleChoice

1.Thebasisforallstrategicandplanningdecisionsinasupplychaincomesfrom

a.theforecastofdemand.

b.salestargets.

c.profitabilityprojections.

d.productionefficiencygoals.

e.alloftheabove

Answer:

a

Difficulty:

Easy

2.Forpushprocesses,amanagermustforecastwhatcustomerdemandwillbeinorderto

a.plantheservicelevel.

b.planthelevelofavailablecapacityandinventory.

c.planthelevelofproductivity.

d.planthelevelofproduction.

e.noneoftheabove

Answ